diff --git a/crates/tek_core/src/lib.rs b/crates/tek_core/src/lib.rs
index a7d68ed8..2a3a4550 100644
--- a/crates/tek_core/src/lib.rs
+++ b/crates/tek_core/src/lib.rs
@@ -46,6 +46,7 @@ submod! {
     handle
     render
     render_split
+    render_border
     time_base
     time_note
     time_tick
diff --git a/crates/tek_core/src/render.rs b/crates/tek_core/src/render.rs
index fe88de0e..896c6c3e 100644
--- a/crates/tek_core/src/render.rs
+++ b/crates/tek_core/src/render.rs
@@ -311,166 +311,6 @@ impl Theme for Nord {
     const SEPARATOR: Color = Color::Rgb(0, 0, 0);
 }
 
-pub trait BorderStyle {
-    const NW: &'static str = "";
-    const N:  &'static str = "";
-    const NE: &'static str = "";
-    const E:  &'static str = "";
-    const SE: &'static str = "";
-    const S:  &'static str = "";
-    const SW: &'static str = "";
-    const W:  &'static str = "";
-
-    #[inline]
-    fn draw (&self, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
-        self.draw_horizontal(buf, area, None)?;
-        self.draw_vertical(buf, area, None)?;
-        self.draw_corners(buf, area, None)?;
-        Ok(area)
-    }
-
-    #[inline]
-    fn draw_horizontal (&self, buf: &mut Buffer, area: Rect, style: Option<Style>) -> Usually<Rect> {
-        let style = style.or_else(||self.style_horizontal());
-        for x in area.x..(area.x+area.width).saturating_sub(1) {
-            self.draw_north(buf, x, area.y, style)?;
-            self.draw_south(buf, x, (area.y + area.height).saturating_sub(1), style)?;
-        }
-        Ok(area)
-    }
-    #[inline]
-    fn draw_north (&self, buf: &mut Buffer, x: u16, y: u16, style: Option<Style>) -> Usually<Rect> {
-        Self::N.blit(buf, x, y, style)
-    }
-    #[inline]
-    fn draw_south (&self, buf: &mut Buffer, x: u16, y: u16, style: Option<Style>) -> Usually<Rect> {
-        Self::S.blit(buf, x, y, style)
-    }
-
-    #[inline]
-    fn draw_vertical (&self, buf: &mut Buffer, area: Rect, style: Option<Style>) -> Usually<Rect> {
-        let style = style.or_else(||self.style_vertical());
-        for y in area.y..(area.y+area.height).saturating_sub(1) {
-            Self::W.blit(buf, area.x, y, style)?;
-            Self::E.blit(buf, area.x + area.width - 1, y, style)?;
-        }
-        Ok(area)
-    }
-
-    #[inline]
-    fn draw_corners (&self, buf: &mut Buffer, area: Rect, style: Option<Style>) -> Usually<Rect> {
-        let style = style.or_else(||self.style_corners());
-        Self::NW.blit(buf, area.x, area.y, style)?;
-        Self::NE.blit(buf, area.x + area.width - 1, area.y, style)?;
-        Self::SW.blit(buf, area.x, area.y + area.height - 1, style)?;
-        Self::SE.blit(buf, area.x + area.width - 1, area.y + area.height - 1, style)?;
-        Ok(area)
-    }
-
-    #[inline]
-    fn style (&self) -> Option<Style> {
-        None
-    }
-    #[inline]
-    fn style_horizontal (&self) -> Option<Style> {
-        self.style()
-    }
-    #[inline]
-    fn style_vertical (&self) -> Option<Style> {
-        self.style()
-    }
-    #[inline]
-    fn style_corners (&self) -> Option<Style> {
-        self.style()
-    }
-}
-
-macro_rules! border {
-    ($($T:ty {
-        $nw:literal $n:literal $ne:literal $w:literal $e:literal $sw:literal $s:literal $se:literal
-        $($x:tt)*
-    }),+) => {
-        $(impl BorderStyle for $T {
-            const NW: &'static str = $nw;
-            const N:  &'static str = $n;
-            const NE: &'static str = $ne;
-            const W:  &'static str = $w;
-            const E:  &'static str = $e;
-            const SW: &'static str = $sw;
-            const S:  &'static str = $s;
-            const SE: &'static str = $se;
-            $($x)*
-        })+
-    }
-}
-
-pub struct Lozenge(pub Style);
-pub struct LozengeV(pub Style);
-pub struct LozengeDotted(pub Style);
-pub struct Quarter(pub Style);
-pub struct QuarterV(pub Style);
-pub struct Chamfer(pub Style);
-pub struct Corners(pub Style);
-
-border! {
-    Lozenge {
-        "╭" "─" "╮"
-        "│"     "│"
-        "╰" "─" "╯"
-        fn style (&self) -> Option<Style> {
-            Some(self.0)
-        }
-    },
-    LozengeV {
-        "╭" "" "╮"
-        "│"    "│"
-        "╰" "" "╯"
-        fn style (&self) -> Option<Style> {
-            Some(self.0)
-        }
-    },
-    LozengeDotted {
-        "╭" "┅" "╮"
-        "┇"     "┇"
-        "╰" "┅" "╯"
-        fn style (&self) -> Option<Style> {
-            Some(self.0)
-        }
-    },
-    Quarter {
-        "▎" "▔" "🮇"
-        "▎"     "🮇"
-        "▎" "▁" "🮇"
-        fn style (&self) -> Option<Style> {
-            Some(self.0)
-        }
-    },
-    QuarterV {
-        "▎" "" "🮇"
-        "▎"    "🮇"
-        "▎" "" "🮇"
-        fn style (&self) -> Option<Style> {
-            Some(self.0)
-        }
-    },
-    Chamfer {
-        "🭂" "▔" "🭍"
-        "▎"     "🮇"
-        "🭓" "▁" "🭞"
-        fn style (&self) -> Option<Style> {
-            Some(self.0)
-        }
-    },
-    Corners {
-        "🬆" "" "🬊" // 🬴 🬸
-        ""     ""
-        "🬱" "" "🬵"
-        fn style (&self) -> Option<Style> {
-            Some(self.0)
-        }
-    }
-}
-
 macro_rules! impl_axis_common { ($A:ident $T:ty) => {
     impl $A<$T> {
         pub fn start_inc (&mut self) -> $T {
diff --git a/crates/tek_core/src/render_border.rs b/crates/tek_core/src/render_border.rs
new file mode 100644
index 00000000..bda9dda6
--- /dev/null
+++ b/crates/tek_core/src/render_border.rs
@@ -0,0 +1,163 @@
+use crate::*;
+
+pub trait BorderStyle {
+    const NW: &'static str = "";
+    const N:  &'static str = "";
+    const NE: &'static str = "";
+    const E:  &'static str = "";
+    const SE: &'static str = "";
+    const S:  &'static str = "";
+    const SW: &'static str = "";
+    const W:  &'static str = "";
+
+    #[inline]
+    fn draw (&self, buf: &mut Buffer, area: Rect) -> Usually<Rect> {
+        self.draw_horizontal(buf, area, None)?;
+        self.draw_vertical(buf, area, None)?;
+        self.draw_corners(buf, area, None)?;
+        Ok(area)
+    }
+
+    #[inline]
+    fn draw_horizontal (&self, buf: &mut Buffer, area: Rect, style: Option<Style>) -> Usually<Rect> {
+        let style = style.or_else(||self.style_horizontal());
+        for x in area.x..(area.x+area.width).saturating_sub(1) {
+            self.draw_north(buf, x, area.y, style)?;
+            self.draw_south(buf, x, (area.y + area.height).saturating_sub(1), style)?;
+        }
+        Ok(area)
+    }
+    #[inline]
+    fn draw_north (&self, buf: &mut Buffer, x: u16, y: u16, style: Option<Style>) -> Usually<Rect> {
+        Self::N.blit(buf, x, y, style)
+    }
+    #[inline]
+    fn draw_south (&self, buf: &mut Buffer, x: u16, y: u16, style: Option<Style>) -> Usually<Rect> {
+        Self::S.blit(buf, x, y, style)
+    }
+
+    #[inline]
+    fn draw_vertical (&self, buf: &mut Buffer, area: Rect, style: Option<Style>) -> Usually<Rect> {
+        let style = style.or_else(||self.style_vertical());
+        for y in area.y..(area.y+area.height).saturating_sub(1) {
+            Self::W.blit(buf, area.x, y, style)?;
+            Self::E.blit(buf, area.x + area.width - 1, y, style)?;
+        }
+        Ok(area)
+    }
+
+    #[inline]
+    fn draw_corners (&self, buf: &mut Buffer, area: Rect, style: Option<Style>) -> Usually<Rect> {
+        let style = style.or_else(||self.style_corners());
+        if area.width > 0 && area.height > 0 {
+            Self::NW.blit(buf, area.x, area.y, style)?;
+            Self::NE.blit(buf, area.x + area.width - 1, area.y, style)?;
+            Self::SW.blit(buf, area.x, area.y + area.height - 1, style)?;
+            Self::SE.blit(buf, area.x + area.width - 1, area.y + area.height - 1, style)?;
+        }
+        Ok(area)
+    }
+
+    #[inline]
+    fn style (&self) -> Option<Style> {
+        None
+    }
+    #[inline]
+    fn style_horizontal (&self) -> Option<Style> {
+        self.style()
+    }
+    #[inline]
+    fn style_vertical (&self) -> Option<Style> {
+        self.style()
+    }
+    #[inline]
+    fn style_corners (&self) -> Option<Style> {
+        self.style()
+    }
+}
+
+macro_rules! border {
+    ($($T:ty {
+        $nw:literal $n:literal $ne:literal $w:literal $e:literal $sw:literal $s:literal $se:literal
+        $($x:tt)*
+    }),+) => {
+        $(impl BorderStyle for $T {
+            const NW: &'static str = $nw;
+            const N:  &'static str = $n;
+            const NE: &'static str = $ne;
+            const W:  &'static str = $w;
+            const E:  &'static str = $e;
+            const SW: &'static str = $sw;
+            const S:  &'static str = $s;
+            const SE: &'static str = $se;
+            $($x)*
+        })+
+    }
+}
+
+pub struct Lozenge(pub Style);
+pub struct LozengeV(pub Style);
+pub struct LozengeDotted(pub Style);
+pub struct Quarter(pub Style);
+pub struct QuarterV(pub Style);
+pub struct Chamfer(pub Style);
+pub struct Corners(pub Style);
+
+border! {
+    Lozenge {
+        "╭" "─" "╮"
+        "│"     "│"
+        "╰" "─" "╯"
+        fn style (&self) -> Option<Style> {
+            Some(self.0)
+        }
+    },
+    LozengeV {
+        "╭" "" "╮"
+        "│"    "│"
+        "╰" "" "╯"
+        fn style (&self) -> Option<Style> {
+            Some(self.0)
+        }
+    },
+    LozengeDotted {
+        "╭" "┅" "╮"
+        "┇"     "┇"
+        "╰" "┅" "╯"
+        fn style (&self) -> Option<Style> {
+            Some(self.0)
+        }
+    },
+    Quarter {
+        "▎" "▔" "🮇"
+        "▎"     "🮇"
+        "▎" "▁" "🮇"
+        fn style (&self) -> Option<Style> {
+            Some(self.0)
+        }
+    },
+    QuarterV {
+        "▎" "" "🮇"
+        "▎"    "🮇"
+        "▎" "" "🮇"
+        fn style (&self) -> Option<Style> {
+            Some(self.0)
+        }
+    },
+    Chamfer {
+        "🭂" "▔" "🭍"
+        "▎"     "🮇"
+        "🭓" "▁" "🭞"
+        fn style (&self) -> Option<Style> {
+            Some(self.0)
+        }
+    },
+    Corners {
+        "🬆" "" "🬊" // 🬴 🬸
+        ""     ""
+        "🬱" "" "🬵"
+        fn style (&self) -> Option<Style> {
+            Some(self.0)
+        }
+    }
+}
diff --git a/crates/tek_sequencer/src/arranger.rs b/crates/tek_sequencer/src/arranger.rs
index 520a6250..59ac48a4 100644
--- a/crates/tek_sequencer/src/arranger.rs
+++ b/crates/tek_sequencer/src/arranger.rs
@@ -6,63 +6,35 @@ use tek_core::Direction;
 /// Represents the tracks and scenes of the composition.
 pub struct Arranger {
     /// Name of arranger
-    pub name: String,
+    pub name:            String,
     /// Display mode of arranger
-    pub mode: ArrangerViewMode,
+    pub mode:            ArrangerViewMode,
     /// Currently selected element.
-    pub selected: ArrangerFocus,
+    pub selected:        ArrangerFocus,
     /// Collection of tracks.
-    pub tracks: Vec<Sequencer>,
+    pub tracks:          Vec<Sequencer>,
     /// Collection of scenes.
-    pub scenes: Vec<Scene>,
-    pub focused: bool,
-    pub entered: bool,
-    pub transport: Option<Arc<RwLock<TransportToolbar>>>,
-    pub show_sequencer: Option<Direction>
+    pub scenes:          Vec<Scene>,
+    pub focused:         bool,
+    pub entered:         bool,
+    pub transport:       Option<Arc<RwLock<TransportToolbar>>>,
+    pub show_sequencer:  Option<Direction>,
+    pub focus_sequencer: bool,
 }
 
-render!(Arranger |self, buf, area| {
-    let arrangement = |buf, area| match self.mode {
-        ArrangerViewMode::Horizontal =>
-            super::arranger_view_h::draw(self, buf, area),
-        ArrangerViewMode::VerticalCompact1 =>
-            super::arranger_view_v::draw_compact_1(self, buf, area),
-        ArrangerViewMode::VerticalCompact2 =>
-            super::arranger_view_v::draw_compact_2(self, buf, area),
-        ArrangerViewMode::VerticalExpanded =>
-            super::arranger_view_v::draw_expanded(self, buf, area),
-    };
-    if let Some(direction) = self.show_sequencer {
-        let used = arrangement(buf, area)?;
-        match direction {
-            Direction::Down => {
-                let area = Rect {
-                    y: area.y + used.height,
-                    height: area.height - used.height,
-                    ..area
-                };
-                self.sequencer().map(|sequencer|sequencer.render(buf, area));
-            },
-            _ => unimplemented!()
-        }
-        Ok(area)
-    } else {
-        arrangement(buf, area)
-    }
-});
-
 impl Arranger {
     pub fn new (name: &str) -> Self {
         Self {
-            name:           name.into(),
-            mode:           ArrangerViewMode::VerticalCompact2,
-            selected:       ArrangerFocus::Clip(0, 0),
-            scenes:         vec![],
-            tracks:         vec![],
-            entered:        true,
-            focused:        true,
-            transport:      None,
-            show_sequencer: Some(Direction::Down),
+            name:            name.into(),
+            mode:            ArrangerViewMode::VerticalCompact2,
+            selected:        ArrangerFocus::Clip(0, 0),
+            scenes:          vec![],
+            tracks:          vec![],
+            entered:         true,
+            focused:         true,
+            transport:       None,
+            show_sequencer:  Some(Direction::Down),
+            focus_sequencer: false,
         }
     }
     pub fn activate (&mut self) {
diff --git a/crates/tek_sequencer/src/arranger_handle.rs b/crates/tek_sequencer/src/arranger_handle.rs
index 3892e889..d846af41 100644
--- a/crates/tek_sequencer/src/arranger_handle.rs
+++ b/crates/tek_sequencer/src/arranger_handle.rs
@@ -1,6 +1,24 @@
 use crate::*;
 
-handle!(Arranger |self, e| handle_keymap(self, e, KEYMAP_ARRANGER));
+handle!(Arranger |self, e| {
+    match e {
+        AppEvent::Input(Event::Key(k)) => {
+            if k.code == KeyCode::Tab {
+                self.focus_sequencer = !self.focus_sequencer;
+                Ok(true)
+            } else if self.focus_sequencer {
+                if let Some(sequencer) = self.sequencer_mut() {
+                    handle_keymap(sequencer, e, KEYMAP_SEQUENCER)
+                } else {
+                    Ok(false)
+                }
+            } else {
+                handle_keymap(self, e, KEYMAP_ARRANGER)
+            }
+        },
+        _ => Ok(false),
+    }
+});
 
 /// Key bindings for arranger section.
 pub const KEYMAP_ARRANGER: &'static [KeyBinding<Arranger>] = keymap!(Arranger {
diff --git a/crates/tek_sequencer/src/arranger_view.rs b/crates/tek_sequencer/src/arranger_view.rs
index a3f48ce9..65a0febc 100644
--- a/crates/tek_sequencer/src/arranger_view.rs
+++ b/crates/tek_sequencer/src/arranger_view.rs
@@ -1,3 +1,6 @@
+use crate::*;
+use tek_core::Direction;
+
 /// Display mode of arranger
 pub enum ArrangerViewMode {
     VerticalExpanded,
@@ -16,3 +19,40 @@ impl ArrangerViewMode {
         }
     }
 }
+
+render!(Arranger |self, buf, area| {
+    let arrangement = |buf, area| match self.mode {
+        ArrangerViewMode::Horizontal =>
+            super::arranger_view_h::draw(self, buf, area),
+        ArrangerViewMode::VerticalCompact1 =>
+            super::arranger_view_v::draw_compact_1(self, buf, area),
+        ArrangerViewMode::VerticalCompact2 =>
+            super::arranger_view_v::draw_compact_2(self, buf, area),
+        ArrangerViewMode::VerticalExpanded =>
+            super::arranger_view_v::draw_expanded(self, buf, area),
+    };
+    if let Some(direction) = self.show_sequencer {
+        let arrangement = arrangement(buf, area)?;
+        match direction {
+            Direction::Down => {
+                let sequencer = if let Some(sequencer) = self.sequencer() {
+                    sequencer.render(buf, Rect {
+                        y: area.y + arrangement.height,
+                        height: area.height - arrangement.height,
+                        ..area
+                    })?
+                } else {
+                    Rect::default()
+                };
+                Corners(Style::default().green().not_dim()).draw(buf, match self.focus_sequencer {
+                    true => sequencer,
+                    false => arrangement,
+                })?;
+            },
+            _ => unimplemented!()
+        }
+        Ok(area)
+    } else {
+        arrangement(buf, area)
+    }
+});