diff --git a/jack/src/jack_port.rs b/jack/src/jack_port.rs
index c5e09bd9..650458a5 100644
--- a/jack/src/jack_port.rs
+++ b/jack/src/jack_port.rs
@@ -1,5 +1,21 @@
 use crate::*;
 
+pub struct JackPort<T: PortSpec> {
+    pub port:    Port<T>,
+    pub connect: Vec<PortConnect>
+}
+
+impl<T: PortSpec> JackPort<T> {
+    //pub fn new (jack: &impl RegisterPort
+}
+
+#[derive(Clone, PartialEq)]
+pub enum PortConnect {
+    Exact(Arc<str>),
+    Wildcard(Arc<str>),
+    RegExp(Arc<str>),
+}
+
 /// This is a utility trait for things that may register or connect [Port]s.
 /// It contains shorthand methods to this purpose. It's implemented for
 /// `Arc<RwLock<JackConnection>>` for terse port registration in the
diff --git a/src/main.rs b/src/main.rs
index b3018354..b9b3f635 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -114,9 +114,9 @@ pub fn main () -> Usually<()> {
                 None, Some(ItemColor::random().into())
             )));
             let midi_in  = jack.read().unwrap().register_port("i", MidiIn::default())?;
-            connect_from(&jack, &midi_in, &midi_from)?;
+            connect_from(jack, &midi_in, &midi_from)?;
             let midi_out = jack.read().unwrap().register_port("o", MidiOut::default())?;
-            connect_to(&jack, &midi_out, &midi_to)?;
+            connect_to(jack, &midi_out, &midi_to)?;
             Sequencer {
                 _jack:     jack.clone(),
                 pool:      PoolModel::from(&phrase),
@@ -156,9 +156,13 @@ pub fn main () -> Usually<()> {
         TekMode::Groovebox {
             midi_from, midi_to, l_from, r_from, l_to, r_to, ..
         } => engine.run(&jack.activate_with(|jack|Ok({
+            let ppq = 96;
             let phrase = Arc::new(RwLock::new(MidiClip::new(
-                "Clip", true, 4 * player.clock.timebase.ppq.get() as usize,
-                None, Some(ItemColor::random().into())
+                "Clip",
+                true,
+                4 * ppq,
+                None,
+                Some(ItemColor::random().into())
             )));
             let mut player = MidiPlayer::new(jack, &"sequencer", Some(&phrase),
                 &midi_from,
@@ -166,9 +170,9 @@ pub fn main () -> Usually<()> {
             )?;
             player.play_phrase = Some((Moment::zero(&player.clock.timebase), Some(phrase.clone())));
             let sampler = Sampler::new(jack, &"sampler",
-                midi_from,
-                &[l_from, r_from],
-                &[l_to,   r_to  ],
+                &midi_from,
+                &[&l_from, &r_from],
+                &[&l_to,   &r_to  ],
             )?;
             jack.read().unwrap().client().connect_ports(
                 &player.midi_outs[0],
diff --git a/tui/src/tui_buffer.rs b/tui/src/tui_buffer.rs
index 37f41739..fbb95739 100644
--- a/tui/src/tui_buffer.rs
+++ b/tui/src/tui_buffer.rs
@@ -1,5 +1,17 @@
 use crate::*;
 
+pub fn buffer_update (buf: &mut Buffer, area: [u16;4], callback: &impl Fn(&mut Cell, u16, u16)) {
+    for row in 0..area.h() {
+        let y = area.y() + row;
+        for col in 0..area.w() {
+            let x = area.x() + col;
+            if x < buf.area.width && y < buf.area.height {
+                callback(buf.get_mut(x, y), col, row);
+            }
+        }
+    }
+}
+
 #[derive(Default)]
 pub struct BigBuffer {
     pub width:   usize,
diff --git a/tui/src/tui_engine.rs b/tui/src/tui_engine.rs
index 4477110b..cd880ff4 100644
--- a/tui/src/tui_engine.rs
+++ b/tui/src/tui_engine.rs
@@ -2,9 +2,9 @@ use crate::*;
 
 pub struct Tui {
     pub exited:  Arc<AtomicBool>,
-    pub buffer:  Buffer,
     pub backend: CrosstermBackend<Stdout>,
-    pub area:    [u16;4], // FIXME auto resize
+    pub buffer:  Buffer,
+    pub area:    [u16;4],
 }
 
 impl Tui {
diff --git a/tui/src/tui_output.rs b/tui/src/tui_output.rs
index d01c28d0..c9b440fd 100644
--- a/tui/src/tui_output.rs
+++ b/tui/src/tui_output.rs
@@ -79,23 +79,3 @@ pub fn buffer_update (buf: &mut Buffer, area: [u16;4], callback: &impl Fn(&mut C
         }
     }
 }
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-//impl Area<u16> for Rect {
-    //fn x (&self) -> u16 { self.x }
-    //fn y (&self) -> u16 { self.y }
-    //fn w (&self) -> u16 { self.width }
-    //fn h (&self) -> u16 { self.height }
-//}
-
-pub fn half_block (lower: bool, upper: bool) -> Option<char> {
-    match (lower, upper) {
-        (true, true)  => Some('█'),
-        (true, false) => Some('▄'),
-        (false, true) => Some('▀'),
-        _ => None
-    }
-}
-
-//impl<T: Content<TuiOut>> Render<TuiOut> for T {}