diff --git a/engine/src/thunk.rs b/engine/src/thunk.rs
index 936114f1..26297641 100644
--- a/engine/src/thunk.rs
+++ b/engine/src/thunk.rs
@@ -1,10 +1,28 @@
 use crate::*;
 use std::marker::PhantomData;
+
 /// Lazily-evaluated [Render]able.
-pub struct Thunk<E: Output, T: Render<E>, F: Fn()->T + Send + Sync>(F, PhantomData<E>);
+pub struct Thunk<E: Output, T: Render<E>, F: Fn()->T + Send + Sync>(PhantomData<E>, F);
 impl<E: Output, T: Render<E>, F: Fn()->T + Send + Sync> Thunk<E, T, F> {
-    pub fn new (thunk: F) -> Self { Self(thunk, Default::default()) }
+    pub fn new (thunk: F) -> Self { Self(Default::default(), thunk) }
 }
 impl<E: Output, T: Render<E>, F: Fn()->T + Send + Sync> Content<E> for Thunk<E, T, F> {
-    fn content (&self) -> impl Render<E> { (self.0)() }
+    fn content (&self) -> impl Render<E> { (self.1)() }
+}
+
+pub struct RenderThunk<E: Output, F: Fn(&mut E) + Send + Sync>(PhantomData<E>, F);
+impl<E: Output, F: Fn(&mut E) + Send + Sync> RenderThunk<E, F> {
+    pub fn new (render: F) -> Self { Self(Default::default(), render) }
+}
+impl<E: Output, F: Fn(&mut E) + Send + Sync> Content<E> for RenderThunk<E, F> {
+    fn render (&self, to: &mut E) { (self.1)(to) }
+}
+
+pub struct LayoutThunk<E: Output, F1: Fn(E::Area)->E::Area + Send + Sync, F2: Fn(&mut E) + Send + Sync>(PhantomData<E>, F1, F2);
+impl<E: Output, F1: Fn(E::Area)->E::Area + Send + Sync, F2: Fn(&mut E) + Send + Sync> LayoutThunk<E, F1, F2> {
+    pub fn new (layout: F1, render: F2) -> Self { Self(Default::default(), layout, render) }
+}
+impl<E: Output, F1: Fn(E::Area)->E::Area + Send + Sync, F2: Fn(&mut E) + Send + Sync> Content<E> for LayoutThunk<E, F1, F2> {
+    fn layout (&self, to: E::Area) -> E::Area { (self.1)(to) }
+    fn render (&self, to: &mut E) { (self.2)(to) }
 }
diff --git a/layout/src/map.rs b/layout/src/map.rs
index 3a917b7f..7f1158f2 100644
--- a/layout/src/map.rs
+++ b/layout/src/map.rs
@@ -10,20 +10,30 @@ pub fn map_south<O: Output>(
             Fill::x(item))))
 }
 
-pub struct Map<A, B, I, F, G>(pub F, pub G) where
+pub struct Map<'a, A, B, I, F, G>(pub PhantomData<&'a()>, pub F, pub G) where
     I: Iterator<Item = A> + Send + Sync,
-    F: Fn() -> I + Send + Sync,
+    F: Fn() -> I + Send + Sync + 'a,
     G: Fn(A, usize)->B + Send + Sync;
 
-impl<E, A, B, I, F, G> Content<E> for Map<A, B, I, F, G> where
+impl<'a, A, B, I, F, G> Map<'a, A, B, I, F, G> where
+    I: Iterator<Item = A> + Send + Sync,
+    F: Fn() -> I + Send + Sync + 'a,
+    G: Fn(A, usize)->B + Send + Sync
+{
+    pub fn new (f: F, g: G) -> Self {
+        Self(Default::default(), f, g)
+    }
+}
+
+impl<'a, E, A, B, I, F, G> Content<E> for Map<'a, A, B, I, F, G> where
     E: Output,
     B: Render<E>,
     I: Iterator<Item = A> + Send + Sync,
-    F: Fn() -> I + Send + Sync,
+    F: Fn() -> I + Send + Sync + 'a,
     G: Fn(A, usize)->B + Send + Sync
 {
     fn layout (&self, area: E::Area) -> E::Area {
-        let Self(get_iterator, callback) = self;
+        let Self(_, get_iterator, callback) = self;
         let mut index = 0;
         let [mut min_x, mut min_y] = area.center();
         let [mut max_x, mut max_y] = area.center();
@@ -42,7 +52,7 @@ impl<E, A, B, I, F, G> Content<E> for Map<A, B, I, F, G> where
         area.center_xy([w.into(), h.into()].into()).into()
     }
     fn render (&self, to: &mut E) {
-        let Self(get_iterator, callback) = self;
+        let Self(_, get_iterator, callback) = self;
         let mut index = 0;
         //let area = self.layout(to.area());
         for item in get_iterator() {
diff --git a/src/arranger/arranger_track.rs b/src/arranger/arranger_track.rs
index 7f38a351..d2865137 100644
--- a/src/arranger/arranger_track.rs
+++ b/src/arranger/arranger_track.rs
@@ -37,27 +37,6 @@ impl Arranger {
 has_clock!(|self:ArrangerTrack|self.player.clock());
 has_player!(|self:ArrangerTrack|self.player);
 impl ArrangerTrack {
-    pub fn widths (tracks: &[Self]) -> Vec<(usize, usize)> {
-        let mut widths = vec![];
-        let mut total = 0;
-        for track in tracks.iter() {
-            let width = track.width;
-            widths.push((width, total));
-            total += width;
-        }
-        widths.push((0, total));
-        widths
-    }
-    pub fn with_widths (tracks: &[ArrangerTrack])
-        -> impl Iterator<Item = (usize, &ArrangerTrack, usize, usize)>
-    {
-        let mut x = 0;
-        tracks.iter().enumerate().map(move |(index, track)|{
-            let data = (index, track, x, x + track.width);
-            x += track.width;
-            data
-        })
-    }
     /// Name of track
     pub fn name (&self) -> &Arc<RwLock<String>> {
         &self.name
diff --git a/src/arranger/arranger_tui.rs b/src/arranger/arranger_tui.rs
index 84abcef7..0b01390e 100644
--- a/src/arranger/arranger_tui.rs
+++ b/src/arranger/arranger_tui.rs
@@ -23,23 +23,32 @@ use crate::*;
 //});
 render!(TuiOut: (self: Arranger) => {
     let scenes = &self.scenes;
-    let ppqs = Arranger::ppqs(scenes, 1);
+    let scene_heights = Arranger::scene_heights(scenes, 1);
     Fill::xy(self.size.of(
         Bsp::s(self.toolbar_view(),
         Bsp::n(self.status_view(),
-        Bsp::n(self.selector_view(),
         Bsp::w(self.pool_view(), 
-        Bsp::s(Align::n(Fill::x(Fixed::y(3, self.header()))),
-        Bsp::s(Align::n(Fill::x(Fixed::y(1, self.ins()))),
-        Bsp::s(Align::n(Fill::x(Fixed::y(1, self.outs()))),
-        Fill::xy(
-            Bsp::a(Fill::xy(Fill::xy(Map(
-                move||scenes.iter(),//.zip(ppqs.iter().map(|row|row.0)),
-                move|scene, i|Arranger::format_scene(&self.tracks, scene, ppqs[i].0)))),
+        Bsp::n(self.selector_view(),
+        Bsp::n(Fixed::y(20, &self.editor),
+        Bsp::s(
+            Align::w(Fill::x(
+                Bsp::s(Fixed::y(3, Align::w(self.header())),
+                Bsp::s(Fixed::y(1, self.ins()), Fill::x(Fixed::y(1, self.outs()))))
+            )),
+            Bsp::a(
                 Bsp::a(
-                    Fill::xy(ArrangerVRowSep::from((self, 1))),
-                    Fill::xy(ArrangerVColSep::from(self))))))))))))))
-});
+                    Map::new(
+                        move||scenes.iter(),//.zip(scene_heights.iter().map(|row|row.0)),
+                        move|scene, i|Arranger::format_scene(&self.tracks, scene, scene_heights[i].0)
+                    ),
+                    self.cursor(),
+                ),
+                Bsp::a(
+                    Fill::xy(self.scene_row_sep()),
+                    ""
+                    //Fill::xy(ArrangerVColSep::from(self))
+                )
+            )))))))))});
     //Align::n(Fill::xy(lay!(
         //Align::n(Fill::xy(Tui::bg(self.color.darkest.rgb, " "))),
         //Align::n(Fill::xy(ArrangerVRowSep::from((self, 1)))),
@@ -71,7 +80,7 @@ impl<'a> ArrangerVClips<'a> {
             size:   &state.size,
             tracks: &state.tracks,
             scenes: &state.scenes,
-            rows:   Arranger::ppqs(&state.scenes, zoom),
+            rows:   Arranger::scene_heights(&state.scenes, zoom),
         }
     }
 }
@@ -81,7 +90,7 @@ fn row <T: Content<TuiOut>> (color: ItemPalette, field: T) -> impl Content<TuiOu
 impl Arranger {
     fn header (&self) -> impl Content<TuiOut> + use<'_> {
         let scenes_w = SCENES_W_OFFSET + ArrangerScene::longest_name(&self.scenes) as u16;
-        Push::x(scenes_w, Map(||ArrangerTrack::with_widths(self.tracks.as_slice()), |(_, track, x1, x2), i| {
+        Push::x(scenes_w, Map::new(||Arranger::tracks_with_widths(self.tracks.as_slice()), |(_, track, x1, x2), i| {
             let (w, h) = (ArrangerTrack::MIN_WIDTH.max(x2 - x1), HEADER_H);
             let color  = track.color();
             let title  = format!("{} {} {}", track.name.read().unwrap(), x1, x2);
@@ -92,7 +101,7 @@ impl Arranger {
     }
     fn ins (&self) -> impl Content<TuiOut> + use<'_> {
         let scenes_w = SCENES_W_OFFSET + ArrangerScene::longest_name(&self.scenes) as u16;
-        Push::x(scenes_w, Map(||ArrangerTrack::with_widths(self.tracks.as_slice()), |(_, track, x1, x2), i| {
+        Push::x(scenes_w, Map::new(||Arranger::tracks_with_widths(self.tracks.as_slice()), |(_, track, x1, x2), i| {
             let (w, h) = (ArrangerTrack::MIN_WIDTH.max(x2 - x1), HEADER_H);
             let color  = track.color();
             let input  = Self::format_input(track);
@@ -102,14 +111,14 @@ impl Arranger {
     }
     fn outs (&self) -> impl Content<TuiOut> + use<'_> {
         let scenes_w = SCENES_W_OFFSET + ArrangerScene::longest_name(&self.scenes) as u16;
-        Push::x(scenes_w, Map(||ArrangerTrack::with_widths(self.tracks.as_slice()), |(_, track, x1, x2), i| {
+        Push::x(scenes_w, Map::new(||Arranger::tracks_with_widths(self.tracks.as_slice()), |(_, track, x1, x2), i| {
             let (w, h) = (ArrangerTrack::MIN_WIDTH.max(x2 - x1), HEADER_H);
             let color  = track.color();
             Fill::xy(Align::n(Push::x(x2 as u16, Tui::bg(color.base.rgb, Min::xy(w as u16, h,
                 Fixed::xy(w as u16, 5, row(color, Self::format_output(track).ok())))))))
         }))
     }
-    pub fn ppqs (scenes: &[ArrangerScene], factor: usize) -> Vec<(usize, usize)> {
+    pub fn scene_heights (scenes: &[ArrangerScene], factor: usize) -> Vec<(usize, usize)> {
         let mut total = 0;
         if factor == 0 {
             scenes.iter().map(|scene|{
@@ -135,7 +144,7 @@ impl Arranger {
         let name = Tui::fg_bg(scene.color.lightest.rgb, scene.color.base.rgb,
             Expand::x(1, Tui::bold(true, scene.name.read().unwrap().clone()))
         );
-        let clips = Map(||ArrangerTrack::with_widths(tracks), move|(index, track, x1, x2), _|
+        let clips = Map::new(||Arranger::tracks_with_widths(tracks), move|(index, track, x1, x2), _|
             Push::x((x2 - x1) as u16, Self::format_clip(scene, index, track, (x2 - x1) as u16, height))
         );
         Fixed::y(height, Bsp::e(icon, Bsp::e(name, clips)))
@@ -226,129 +235,209 @@ impl Arranger {
         Ok(format!("<{}", track.player.midi_outs().first().map(|port|port.short_name())
             .transpose()?.unwrap_or("?".into())))
     }
-}
-pub struct ArrangerVColSep {
-    fg:       Color,
-    cols:     Vec<(usize, usize)>,
-    scenes_w: u16
-}
-from!(|state:&Arranger|ArrangerVColSep = Self {
-    fg:       TuiTheme::separator_fg(false),
-    cols:     ArrangerTrack::widths(&state.tracks),
-    scenes_w: SCENES_W_OFFSET + ArrangerScene::longest_name(&state.scenes) as u16,
-});
-render!(TuiOut: |self: ArrangerVColSep, to| {
-    let style = Some(Style::default().fg(self.fg));
-    for x in self.cols.iter().map(|col|col.1) {
-        let x = self.scenes_w + to.area().x() + x as u16;
-        for y in to.area().y()..to.area().y2() {
-            to.blit(&"▎", x, y, style);
+
+    fn track_col_sep <'a> (&'a self) -> impl Content<TuiOut> + 'a {
+        let fg = TuiTheme::separator_fg(false);
+        let x  = SCENES_W_OFFSET + ArrangerScene::longest_name(&self.scenes) as u16;
+        Map::new(
+            move||Self::tracks_with_widths(self.tracks.as_slice()),
+            move|(_n, _track, x1, _x2), _i|Push::x(x + x1 as u16, Fill::y(Tui::fg(fg, "▎")))
+        )
+    }
+    pub fn track_widths (tracks: &[ArrangerTrack]) -> Vec<(usize, usize)> {
+        let mut widths = vec![];
+        let mut total = 0;
+        for track in tracks.iter() {
+            let width = track.width;
+            widths.push((width, total));
+            total += width;
         }
+        widths.push((0, total));
+        widths
     }
-});
-
-pub struct ArrangerVRowSep {
-    fg:   Color,
-    rows: Vec<(usize, usize)>,
-}
-from!(|args:(&Arranger, usize)|ArrangerVRowSep = Self {
-    fg:   Color::Rgb(255,255,255,),
-    rows: Arranger::ppqs(&args.0.scenes, args.1),
-});
-render!(TuiOut: |self: ArrangerVRowSep, to|for y in self.rows.iter().map(|row|row.1) {
-    let y = to.area().y() + (y / PPQ) as u16 + 1;
-    if y >= to.buffer.area.height { break }
-    for x in to.area().x()..to.area().x2().saturating_sub(2) {
-        //if x < to.buffer.area.x && y < to.buffer.area.y {
-            if let Some(cell) = to.buffer.cell_mut(ratatui::prelude::Position::from((x, y))) {
-                cell.modifier = Modifier::UNDERLINED;
-                cell.underline_color = self.fg;
-            }
-        //}
+    pub fn tracks_with_widths (tracks: &[ArrangerTrack])
+        -> impl Iterator<Item = (usize, &ArrangerTrack, usize, usize)>
+    {
+        let mut x = 0;
+        tracks.iter().enumerate().map(move |(index, track)|{
+            let data = (index, track, x, x + track.width);
+            x += track.width;
+            data
+        })
     }
-});
 
-pub struct ArrangerVCursor {
-    cols:     Vec<(usize, usize)>,
-    rows:     Vec<(usize, usize)>,
-    color:    ItemPalette,
-    reticle:  Reticle,
-    selected: ArrangerSelection,
-    scenes_w: u16,
-}
+    fn scene_row_sep <'a> (&'a self) -> impl Content<TuiOut> + 'a {
+        let fg = Color::Rgb(255,255,255);
+        Map::new(move||self.scenes_with_heights(), |_, _|"")
+        //Map(||rows.iter(), |(_n, _scene, y1, _y2), _i| {
+            //let y = to.area().y() + (y / PPQ) as u16 + 1;
+            //if y >= to.buffer.area.height { break }
+            //for x in to.area().x()..to.area().x2().saturating_sub(2) {
+                ////if x < to.buffer.area.x && y < to.buffer.area.y {
+                    //if let Some(cell) = to.buffer.cell_mut(ratatui::prelude::Position::from((x, y))) {
+                        //cell.modifier = Modifier::UNDERLINED;
+                        //cell.underline_color = fg;
+                    //}
+                ////}
+            //}
+        //})
+    }
+    pub fn scenes_with_heights (&self)
+        -> impl Iterator<Item = (usize, &ArrangerScene, usize, usize)>
+    {
+        let mut y = 0;
+        self.scenes.iter().enumerate().map(move|(index, scene)|{
+            let data = (index, scene, y, y + 1);
+            y += 1;
+            data
+        })
+    }
 
-from!(|args:(&Arranger, usize)|ArrangerVCursor = Self {
-    cols:     ArrangerTrack::widths(&args.0.tracks),
-    rows:     Arranger::ppqs(&args.0.scenes, args.1),
-    selected: args.0.selected(),
-    scenes_w: SCENES_W_OFFSET + ArrangerScene::longest_name(&args.0.scenes) as u16,
-    color:    args.0.color,
-    reticle:  Reticle(Style {
-        fg:              Some(args.0.color.lighter.rgb),
-        bg:              None,
-        underline_color: None,
-        add_modifier:    Modifier::empty(),
-        sub_modifier:    Modifier::DIM
-    }),
-});
-impl Content<TuiOut> for ArrangerVCursor {
-    fn render (&self, to: &mut TuiOut) {
-        let area     = to.area();
+    fn cursor (&self) -> impl Content<TuiOut> + '_ {
+        let color    = self.color;
+        let bg       = color.lighter.rgb;//Color::Rgb(0, 255, 0);
+        let selected = self.selected();
+        let cols     = Arranger::track_widths(&self.tracks);
+        let rows     = Arranger::scene_heights(&self.scenes, 1);
+        let scenes_w = SCENES_W_OFFSET + ArrangerScene::longest_name(&self.scenes) as u16;
         let focused  = true;
-        let selected = self.selected;
-        let get_track_area = |t: usize| [
-            self.scenes_w + area.x() + self.cols[t].1 as u16, area.y(),
-            self.cols[t].0 as u16, area.h(),
-        ];
-        let get_scene_area = |s: usize| [
-            area.x(), HEADER_H + area.y() + (self.rows[s].1 / PPQ) as u16,
-            area.w(), (self.rows[s].0 / PPQ) as u16
-        ];
-        let get_clip_area = |t: usize, s: usize| [
-            (self.scenes_w + area.x() + self.cols[t].1 as u16).saturating_sub(1),
-            HEADER_H + area.y() + (self.rows[s].1/PPQ) as u16,
-            self.cols[t].0 as u16 + 2,
-            (self.rows[s].0 / PPQ) as u16
-        ];
-        let mut track_area: Option<[u16;4]> = None;
-        let mut scene_area: Option<[u16;4]> = None;
-        let mut clip_area:  Option<[u16;4]> = None;
-        let area = match selected {
-            ArrangerSelection::Mix => area,
-            ArrangerSelection::Track(t) => {
-                track_area = Some(get_track_area(t));
-                area
-            },
-            ArrangerSelection::Scene(s) => {
-                scene_area = Some(get_scene_area(s));
-                area
-            },
-            ArrangerSelection::Clip(t, s) => {
-                track_area = Some(get_track_area(t));
-                scene_area = Some(get_scene_area(s));
-                clip_area  = Some(get_clip_area(t, s));
-                area
-            },
-        };
-        let bg = self.color.lighter.rgb;//Color::Rgb(0, 255, 0);
-        if let Some([x, y, width, height]) = track_area {
-            to.fill_fg([x,         y, 1, height], bg);
-            to.fill_fg([x + width, y, 1, height], bg);
-        }
-        if let Some([_, y, _, height]) = scene_area {
-            to.fill_ul([area.x(), y - 1,          area.w(), 1], bg);
-            to.fill_ul([area.x(), y + height - 1, area.w(), 1], bg);
-        }
-        if focused {
-            to.place(if let Some(clip_area) = clip_area {
-                clip_area
-            } else if let Some(track_area) = track_area {
-                track_area.clip_h(HEADER_H)
-            } else if let Some(scene_area) = scene_area {
-                scene_area.clip_w(self.scenes_w)
-            } else {
-                area.clip_w(self.scenes_w).clip_h(HEADER_H)
-            }, &self.reticle)
-        };
+        let reticle  = Reticle(Style {
+            fg:              Some(self.color.lighter.rgb),
+            bg:              None,
+            underline_color: None,
+            add_modifier:    Modifier::empty(),
+            sub_modifier:    Modifier::DIM
+        });
+        RenderThunk::new(move|to: &mut TuiOut|{
+            let area = to.area();
+            let [x, y, w, h] = area.xywh();
+            let mut track_area: Option<[u16;4]> = match selected {
+                ArrangerSelection::Track(t) | ArrangerSelection::Clip(t, _) => Some([
+                    x + scenes_w + cols[t].1 as u16, y,
+                    cols[t].0 as u16,  h,
+                ]),
+                _ => None
+            };
+            let mut scene_area: Option<[u16;4]> = match selected {
+                ArrangerSelection::Scene(s) | ArrangerSelection::Clip(_, s) => Some([
+                    x, y + HEADER_H + (rows[s].1 / PPQ) as u16,
+                    w, (rows[s].0 / PPQ) as u16
+                ]),
+                _ => None
+            };
+            let mut clip_area: Option<[u16;4]> = match selected {
+                ArrangerSelection::Clip(t, s) => Some([
+                    (scenes_w + x + cols[t].1 as u16).saturating_sub(1),
+                    HEADER_H + y + (rows[s].1/PPQ) as u16,
+                    cols[t].0 as u16 + 2,
+                    (rows[s].0 / PPQ) as u16
+                ]),
+                _ => None
+            };
+            if let Some([x, y, width, height]) = track_area {
+                to.fill_fg([x,         y, 1, height], bg);
+                to.fill_fg([x + width, y, 1, height], bg);
+            }
+            if let Some([_, y, _, height]) = scene_area {
+                to.fill_ul([x, y - 1,          w, 1], bg);
+                to.fill_ul([x, y + height - 1, w, 1], bg);
+            }
+            if focused {
+                to.place(if let Some(clip_area) = clip_area {
+                    clip_area
+                } else if let Some(track_area) = track_area {
+                    track_area.clip_h(HEADER_H)
+                } else if let Some(scene_area) = scene_area {
+                    scene_area.clip_w(scenes_w)
+                } else {
+                    area.clip_w(scenes_w).clip_h(HEADER_H)
+                }, &reticle)
+            };
+        })
     }
 }
+
+//pub struct ArrangerVCursor {
+    //cols:     Vec<(usize, usize)>,
+    //rows:     Vec<(usize, usize)>,
+    //color:    ItemPalette,
+    //reticle:  Reticle,
+    //selected: ArrangerSelection,
+    //scenes_w: u16,
+//}
+
+//from!(|args:(&Arranger, usize)|ArrangerVCursor = Self {
+    //cols:     Arranger::track_widths(&args.0.tracks),
+    //rows:     Arranger::scene_heights(&args.0.scenes, args.1),
+    //selected: args.0.selected(),
+    //scenes_w: SCENES_W_OFFSET + ArrangerScene::longest_name(&args.0.scenes) as u16,
+    //color:    args.0.color,
+    //reticle:  Reticle(Style {
+        //fg:              Some(args.0.color.lighter.rgb),
+        //bg:              None,
+        //underline_color: None,
+        //add_modifier:    Modifier::empty(),
+        //sub_modifier:    Modifier::DIM
+    //}),
+//});
+//impl Content<TuiOut> for ArrangerVCursor {
+    //fn render (&self, to: &mut TuiOut) {
+        //let area     = to.area();
+        //let focused  = true;
+        //let selected = self.selected;
+        //let get_track_area = |t: usize| [
+            //self.scenes_w + area.x() + self.cols[t].1 as u16, area.y(),
+            //self.cols[t].0 as u16, area.h(),
+        //];
+        //let get_scene_area = |s: usize| [
+            //area.x(), HEADER_H + area.y() + (self.rows[s].1 / PPQ) as u16,
+            //area.w(), (self.rows[s].0 / PPQ) as u16
+        //];
+        //let get_clip_area = |t: usize, s: usize| [
+            //(self.scenes_w + area.x() + self.cols[t].1 as u16).saturating_sub(1),
+            //HEADER_H + area.y() + (self.rows[s].1/PPQ) as u16,
+            //self.cols[t].0 as u16 + 2,
+            //(self.rows[s].0 / PPQ) as u16
+        //];
+        //let mut track_area: Option<[u16;4]> = None;
+        //let mut scene_area: Option<[u16;4]> = None;
+        //let mut clip_area:  Option<[u16;4]> = None;
+        //let area = match selected {
+            //ArrangerSelection::Mix => area,
+            //ArrangerSelection::Track(t) => {
+                //track_area = Some(get_track_area(t));
+                //area
+            //},
+            //ArrangerSelection::Scene(s) => {
+                //scene_area = Some(get_scene_area(s));
+                //area
+            //},
+            //ArrangerSelection::Clip(t, s) => {
+                //track_area = Some(get_track_area(t));
+                //scene_area = Some(get_scene_area(s));
+                //clip_area  = Some(get_clip_area(t, s));
+                //area
+            //},
+        //};
+        //let bg = self.color.lighter.rgb;//Color::Rgb(0, 255, 0);
+        //if let Some([x, y, width, height]) = track_area {
+            //to.fill_fg([x,         y, 1, height], bg);
+            //to.fill_fg([x + width, y, 1, height], bg);
+        //}
+        //if let Some([_, y, _, height]) = scene_area {
+            //to.fill_ul([area.x(), y - 1,          area.w(), 1], bg);
+            //to.fill_ul([area.x(), y + height - 1, area.w(), 1], bg);
+        //}
+        //if focused {
+            //to.place(if let Some(clip_area) = clip_area {
+                //clip_area
+            //} else if let Some(track_area) = track_area {
+                //track_area.clip_h(HEADER_H)
+            //} else if let Some(scene_area) = scene_area {
+                //scene_area.clip_w(self.scenes_w)
+            //} else {
+                //area.clip_w(self.scenes_w).clip_h(HEADER_H)
+            //}, &self.reticle)
+        //};
+    //}
+//}
diff --git a/src/lib.rs b/src/lib.rs
index 70231d0a..bcce4045 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -10,15 +10,7 @@ pub(crate) use ::tek_tui::{
     *,
     tek_edn::*,
     tek_layout::*,
-    tek_engine::{
-        from,
-        Usually, Perhaps,
-        Output, Content, Render, RenderBox, Thunk, render, Engine, Size, Area,
-        Input, handle, Handle, command, Command, input_to_command, InputToCommand, keymap, EventMap,
-    },
-    Tui,
-    TuiIn, key, ctrl, shift, alt, kexp, kpat,
-    TuiOut,
+    tek_engine::*,
     crossterm::{
         self,
         event::{
diff --git a/src/piano/piano_h_notes.rs b/src/piano/piano_h_notes.rs
index 373e3176..247fd3fe 100644
--- a/src/piano/piano_h_notes.rs
+++ b/src/piano/piano_h_notes.rs
@@ -25,7 +25,9 @@ render!(TuiOut: |self: PianoHorizontalNotes<'a>, render|{
             let is_in_y = source_y < source.height;
             if is_in_x && is_in_y {
                 if let Some(source_cell) = source.get(source_x, source_y) {
-                    *render.buffer.get_mut(screen_x, screen_y) = source_cell.clone();
+                    if let Some(cell) = render.buffer.cell_mut(ratatui::prelude::Position::from((screen_x, screen_y))) {
+                        *cell = source_cell.clone();
+                    }
                 }
             }
         }
diff --git a/src/pool/pool_tui.rs b/src/pool/pool_tui.rs
index 99aeb75c..2ddda0ea 100644
--- a/src/pool/pool_tui.rs
+++ b/src/pool/pool_tui.rs
@@ -7,7 +7,7 @@ render!(TuiOut: (self: PoolView<'a>) => {
     let color = self.1.phrase().read().unwrap().color;
     Outer(
         Style::default().fg(color.dark.rgb).bg(color.darkest.rgb)
-    ).enclose(Map(||model.phrases().iter(), |clip, i|{
+    ).enclose(Map::new(||model.phrases().iter(), |clip, i|{
         let item_height = 1;
         let item_offset = i as u16 * item_height;
         let selected    = i == model.phrase_index();
diff --git a/src/sampler/sample_list.rs b/src/sampler/sample_list.rs
index b8a1e4de..96804061 100644
--- a/src/sampler/sample_list.rs
+++ b/src/sampler/sample_list.rs
@@ -17,7 +17,7 @@ render!(TuiOut: (self: SampleList<'a>) => {
     let note_lo = editor.note_lo().load(Relaxed);
     let note_pt = editor.note_point();
     let note_hi = editor.note_hi();
-    Outer(Style::default().fg(TuiTheme::g(96))).enclose(Map(move||(note_lo..=note_hi).rev(), move|note, i| {
+    Outer(Style::default().fg(TuiTheme::g(96))).enclose(Map::new(move||(note_lo..=note_hi).rev(), move|note, i| {
 
         let offset = |a|Push::y(i as u16, Align::n(Fixed::y(1, Fill::x(a))));