diff --git a/crates/tek_core/src/space.rs b/crates/tek_core/src/space.rs
index 21e70a4a..1081d800 100644
--- a/crates/tek_core/src/space.rs
+++ b/crates/tek_core/src/space.rs
@@ -903,6 +903,16 @@ impl<E: Engine, A: Widget<Engine = E>, B: Widget<Engine = E>> Widget for Split<E
 /// A widget that tracks its render width and height
 pub struct Measure<E: Engine>(PhantomData<E>, AtomicUsize, AtomicUsize);
 
+impl<E: Engine> Clone for Measure<E> {
+    fn clone (&self) -> Self {
+        Self(
+            Default::default(),
+            AtomicUsize::from(self.1.load(Ordering::Relaxed)),
+            AtomicUsize::from(self.2.load(Ordering::Relaxed)),
+        )
+    }
+}
+
 impl<E: Engine> std::fmt::Debug for Measure<E> {
     fn fmt (&self, f: &mut std::fmt::Formatter<'_>) -> std::result::Result<(), std::fmt::Error> {
         f.debug_struct("Measure")
diff --git a/crates/tek_core/src/tui.rs b/crates/tek_core/src/tui.rs
index 20e1baaa..ae05b31e 100644
--- a/crates/tek_core/src/tui.rs
+++ b/crates/tek_core/src/tui.rs
@@ -654,3 +654,37 @@ pub const fn shift (key: KeyEvent) -> KeyEvent {
         }))
     }
 }
+#[macro_export] macro_rules! key_lit {
+    ($code:expr) => {
+        TuiEvent::Input(crossterm::event::Event::Key(crossterm::event::KeyEvent {
+            code:      $code,
+            modifiers: crossterm::event::KeyModifiers::NONE,
+            kind:      crossterm::event::KeyEventKind::Press,
+            state:     crossterm::event::KeyEventState::NONE
+        }))
+    };
+    (Ctrl-$code:expr) => {
+        TuiEvent::Input(crossterm::event::Event::Key(crossterm::event::KeyEvent {
+            code:      $code,
+            modifiers: crossterm::event::KeyModifiers::CONTROL,
+            kind:      crossterm::event::KeyEventKind::Press,
+            state:     crossterm::event::KeyEventState::NONE
+        }))
+    };
+    (Alt-$code:expr) => {
+        TuiEvent::Input(crossterm::event::Event::Key(crossterm::event::KeyEvent {
+            code:      $code,
+            modifiers: crossterm::event::KeyModifiers::ALT,
+            kind:      crossterm::event::KeyEventKind::Press,
+            state:     crossterm::event::KeyEventState::NONE
+        }))
+    };
+    (Shift-$code:expr) => {
+        TuiEvent::Input(crossterm::event::Event::Key(crossterm::event::KeyEvent {
+            code:      $code,
+            modifiers: crossterm::event::KeyModifiers::SHIFT,
+            kind:      crossterm::event::KeyEventKind::Press,
+            state:     crossterm::event::KeyEventState::NONE
+        }))
+    }
+}
diff --git a/crates/tek_tui/src/tui_command.rs b/crates/tek_tui/src/tui_command.rs
index 48d8bd91..546f13b4 100644
--- a/crates/tek_tui/src/tui_command.rs
+++ b/crates/tek_tui/src/tui_command.rs
@@ -117,6 +117,8 @@ pub enum PhrasesCommand {
     Phrase(PhrasePoolCommand),
     Rename(PhraseRenameCommand),
     Length(PhraseLengthCommand),
+    Import(FileBrowserCommand),
+    Export(FileBrowserCommand),
 }
 
 impl<T: PhrasesControl> Command<T> for PhrasesCommand {
@@ -124,8 +126,44 @@ impl<T: PhrasesControl> Command<T> for PhrasesCommand {
         use PhrasesCommand::*;
         Ok(match self {
             Phrase(command) => command.execute(state)?.map(Phrase),
-            Rename(command) => command.execute(state)?.map(Rename),
-            Length(command) => command.execute(state)?.map(Length),
+            Rename(command) => match command {
+                PhraseRenameCommand::Begin => {
+                    let length = state.phrases()[state.phrase_index()].read().unwrap().length;
+                    *state.phrases_mode_mut() = Some(
+                        PhrasesMode::Length(state.phrase_index(), length, PhraseLengthFocus::Bar)
+                    );
+                    None
+                },
+                _ => command.execute(state)?.map(Rename)
+            },
+            Length(command) => match command {
+                PhraseLengthCommand::Begin => {
+                    let name = state.phrases()[state.phrase_index()].read().unwrap().name.clone();
+                    *state.phrases_mode_mut() = Some(
+                        PhrasesMode::Rename(state.phrase_index(), name)
+                    );
+                    None
+                },
+                _ => command.execute(state)?.map(Length)
+            },
+            Import(command) => match command {
+                FileBrowserCommand::Begin => {
+                    *state.phrases_mode_mut() = Some(
+                        PhrasesMode::Import(state.phrase_index(), FileBrowser::new())
+                    );
+                    None
+                },
+                _ => command.execute(state)?.map(Import)
+            },
+            Export(command) => match command {
+                FileBrowserCommand::Begin => {
+                    *state.phrases_mode_mut() = Some(
+                        PhrasesMode::Export(state.phrase_index(), FileBrowser::new())
+                    );
+                    None
+                },
+                _ => command.execute(state)?.map(Export)
+            },
             Select(phrase) => {
                 state.set_phrase_index(phrase);
                 None
@@ -137,21 +175,20 @@ impl<T: PhrasesControl> Command<T> for PhrasesCommand {
 #[derive(Copy, Clone, Debug, PartialEq)]
 pub enum PhraseLengthCommand {
     Begin,
+    Cancel,
+    Set(usize),
     Next,
     Prev,
     Inc,
     Dec,
-    Set(usize),
-    Cancel,
 }
 
 impl<T: PhrasesControl> Command<T> for PhraseLengthCommand {
     fn execute (self, state: &mut T) -> Perhaps<Self> {
         use PhraseLengthFocus::*;
         use PhraseLengthCommand::*;
-        let mut mode = state.phrases_mode_mut().clone();
-        if let Some(PhrasesMode::Length(phrase, ref mut length, ref mut focus)) = mode {
-            match self {
+        match state.phrases_mode_mut().clone() {
+            Some(PhrasesMode::Length(phrase, ref mut length, ref mut focus)) => match self {
                 Cancel => { *state.phrases_mode_mut() = None; },
                 Prev => { focus.prev() },
                 Next => { focus.next() },
@@ -174,15 +211,9 @@ impl<T: PhrasesControl> Command<T> for PhraseLengthCommand {
                     return Ok(Some(Self::Set(old_length)))
                 },
                 _ => unreachable!()
-            }
-        } else if self == Begin {
-            let length = state.phrases()[state.phrase_index()].read().unwrap().length;
-            *state.phrases_mode_mut() = Some(
-                PhrasesMode::Length(state.phrase_index(), length, PhraseLengthFocus::Bar)
-            );
-        } else {
-            unreachable!()
-        }
+            },
+            _ => unreachable!()
+        };
         Ok(None)
     }
 }
@@ -190,20 +221,16 @@ impl<T: PhrasesControl> Command<T> for PhraseLengthCommand {
 #[derive(Clone, Debug, PartialEq)]
 pub enum PhraseRenameCommand {
     Begin,
-    Set(String),
-    Confirm,
     Cancel,
+    Confirm,
+    Set(String),
 }
 
-impl<T> Command<T> for PhraseRenameCommand
-where
-    T: PhrasesControl
-{
+impl<T: PhrasesControl> Command<T> for PhraseRenameCommand {
     fn execute (self, state: &mut T) -> Perhaps<Self> {
         use PhraseRenameCommand::*;
-        let mut mode = state.phrases_mode_mut().clone();
-        if let Some(PhrasesMode::Rename(phrase, ref mut old_name)) = mode {
-            match self {
+        match state.phrases_mode_mut().clone() {
+            Some(PhrasesMode::Rename(phrase, ref mut old_name)) => match self {
                 Set(s) => {
                     state.phrases()[phrase].write().unwrap().name = s.into();
                     return Ok(Some(Self::Set(old_name.clone())))
@@ -217,15 +244,40 @@ where
                     state.phrases()[phrase].write().unwrap().name = old_name.clone();
                 },
                 _ => unreachable!()
-            };
-        } else if self == Begin {
-            let name = state.phrases()[state.phrase_index()].read().unwrap().name.clone();
-            *state.phrases_mode_mut() = Some(
-                PhrasesMode::Rename(state.phrase_index(), name)
-            );
-        } else {
-            unreachable!()
-        }
+            },
+            _ => unreachable!()
+        };
+        Ok(None)
+    }
+}
+
+/// Commands supported by [FileBrowser]
+#[derive(Debug, Clone, PartialEq)]
+pub enum FileBrowserCommand {
+    Begin,
+    Cancel,
+    Confirm,
+    Select(usize),
+    Chdir(PathBuf)
+}
+
+impl<T: PhrasesControl> Command<T> for FileBrowserCommand {
+    fn execute (self, state: &mut T) -> Perhaps<Self> {
+        use FileBrowserCommand::*;
+        match state.phrases_mode_mut().clone() {
+            Some(PhrasesMode::Import(index, browser)) => {
+                todo!()
+            },
+            Some(PhrasesMode::Export(index, browser)) => {
+                todo!()
+            },
+            _ => match self {
+                Begin => {
+                    todo!()
+                },
+                _ => unreachable!()
+            }
+        };
         Ok(None)
     }
 }
diff --git a/crates/tek_tui/src/tui_input.rs b/crates/tek_tui/src/tui_input.rs
index 78bca48d..00b5da25 100644
--- a/crates/tek_tui/src/tui_input.rs
+++ b/crates/tek_tui/src/tui_input.rs
@@ -247,73 +247,79 @@ fn to_arranger_clip_command (input: &TuiInput, t: usize, s: usize) -> Option<Arr
 
 impl<T: PhrasesControl> InputToCommand<Tui, T> for PhrasesCommand {
     fn input_to_command (state: &T, input: &TuiInput) -> Option<Self> {
-        use PhrasePoolCommand   as Pool;
         use PhraseRenameCommand as Rename;
         use PhraseLengthCommand as Length;
-        use KeyCode::{Up, Down, Delete, Char};
-        let index = state.phrase_index();
-        let count = state.phrases().len();
-        Some(match input.event() {
-            key!(Up)   => Self::Select(
-                state.phrase_index().overflowing_sub(1).0.min(state.phrases().len() - 1)
-            ),
-            key!(Down) => Self::Select(
-                state.phrase_index().saturating_add(1) % state.phrases().len()
-            ),
-            key!(Char(',')) => if index > 1 {
-                state.set_phrase_index(state.phrase_index().saturating_sub(1));
-                Self::Phrase(Pool::Swap(index - 1, index))
-            } else {
-                return None
-            },
-            key!(Char('.')) => if index < count.saturating_sub(1) {
-                state.set_phrase_index(state.phrase_index() + 1);
-                Self::Phrase(Pool::Swap(index + 1, index))
-            } else {
-                return None
-            },
-            key!(Delete) => if index > 0 {
-                state.set_phrase_index(index.min(count.saturating_sub(1)));
-                Self::Phrase(Pool::Delete(index))
-            } else {
-                return None
-            },
-            key!(Char('a')) => Self::Phrase(Pool::Add(
-                count,
-                Phrase::new(
-                    String::from("(new)"), true, 4 * PPQ, None, Some(ItemColorTriplet::random())
-                )
-            )),
-            key!(Char('i')) => Self::Phrase(Pool::Add(
-                index + 1,
-                Phrase::new(
-                    String::from("(new)"), true, 4 * PPQ, None, Some(ItemColorTriplet::random())
-                )
-            )),
-            key!(Char('d')) => {
-                let mut phrase = state.phrases()[index].read().unwrap().duplicate();
-                phrase.color = ItemColorTriplet::random_near(phrase.color, 0.25);
-                Self::Phrase(Pool::Add(index + 1, phrase))
-            },
-            key!(Char('c')) => Self::Phrase(Pool::SetColor(
-                index,
-                ItemColor::random()
-            )),
-            key!(Char('n')) => Self::Rename(Rename::Begin),
-            key!(Char('t')) => Self::Length(Length::Begin),
-            _ => match state.phrases_mode() {
-                Some(PhrasesMode::Rename(..)) => {
-                    Self::Rename(Rename::input_to_command(state, input)?)
-                },
-                Some(PhrasesMode::Length(..)) => {
-                    Self::Length(Length::input_to_command(state, input)?)
-                },
-                _ => return None
-            }
+        use FileBrowserCommand  as Browse;
+        Some(match state.phrases_mode() {
+            Some(PhrasesMode::Rename(..)) => Self::Rename(Rename::input_to_command(state, input)?),
+            Some(PhrasesMode::Length(..)) => Self::Length(Length::input_to_command(state, input)?),
+            Some(PhrasesMode::Import(..)) => Self::Import(Browse::input_to_command(state, input)?),
+            Some(PhrasesMode::Export(..)) => Self::Export(Browse::input_to_command(state, input)?),
+            _ => to_phrases_command(state, input)?
         })
     }
 }
 
+fn to_phrases_command <T: PhrasesControl> (state: &T, input: &TuiInput) -> Option<PhrasesCommand> {
+    use KeyCode::{Up, Down, Delete, Char};
+    use PhrasesCommand      as Cmd;
+    use PhrasePoolCommand   as Pool;
+    use PhraseRenameCommand as Rename;
+    use PhraseLengthCommand as Length;
+    use FileBrowserCommand  as Browse;
+    let index = state.phrase_index();
+    let count = state.phrases().len();
+    Some(match input.event() {
+        key!(Char('n')) => Cmd::Rename(Rename::Begin),
+        key!(Char('t')) => Cmd::Length(Length::Begin),
+        key!(Char('m')) => Cmd::Import(Browse::Begin),
+        key!(Char('x')) => Cmd::Export(Browse::Begin),
+        key!(Up)   => Cmd::Select(index.overflowing_sub(1).0.min(state.phrases().len() - 1)),
+        key!(Down) => Cmd::Select(index.saturating_add(1) % state.phrases().len()),
+        key!(Char('c')) => Cmd::Phrase(Pool::SetColor(index, ItemColor::random())),
+        key!(Char(',')) => if index > 1 {
+            state.set_phrase_index(state.phrase_index().saturating_sub(1));
+            Cmd::Phrase(Pool::Swap(index - 1, index))
+        } else {
+            return None
+        },
+        key!(Char('.')) => if index < count.saturating_sub(1) {
+            state.set_phrase_index(state.phrase_index() + 1);
+            Cmd::Phrase(Pool::Swap(index + 1, index))
+        } else {
+            return None
+        },
+        key!(Delete) => if index > 0 {
+            state.set_phrase_index(index.min(count.saturating_sub(1)));
+            Cmd::Phrase(Pool::Delete(index))
+        } else {
+            return None
+        },
+        key!(Char('a')) => Cmd::Phrase(Pool::Add(
+            count, Phrase::new(
+                String::from("(new)"), true, 4 * PPQ, None, Some(ItemColorTriplet::random())
+            )
+        )),
+        key!(Char('i')) => Cmd::Phrase(Pool::Add(
+            index + 1, Phrase::new(
+                String::from("(new)"), true, 4 * PPQ, None, Some(ItemColorTriplet::random())
+            )
+        )),
+        key!(Char('d')) => {
+            let mut phrase = state.phrases()[index].read().unwrap().duplicate();
+            phrase.color = ItemColorTriplet::random_near(phrase.color, 0.25);
+            Cmd::Phrase(Pool::Add(index + 1, phrase))
+        },
+        _ => return None
+    })
+}
+
+impl<T: PhrasesControl> InputToCommand<Tui, T> for FileBrowserCommand {
+    fn input_to_command (state: &T, from: &TuiInput) -> Option<Self> {
+        todo!()
+    }
+}
+
 impl<T: PhrasesControl> InputToCommand<Tui, T> for PhraseLengthCommand {
     fn input_to_command (state: &T, from: &TuiInput) -> Option<Self> {
         use KeyCode::{Up, Down, Right, Left, Enter, Esc};
diff --git a/crates/tek_tui/src/tui_model.rs b/crates/tek_tui/src/tui_model.rs
index 41b47178..e530e76a 100644
--- a/crates/tek_tui/src/tui_model.rs
+++ b/crates/tek_tui/src/tui_model.rs
@@ -155,6 +155,72 @@ impl Default for PhrasesModel {
     }
 }
 
+/// Modes for phrase pool
+#[derive(Debug, Clone)]
+pub enum PhrasesMode {
+    /// Renaming a pattern
+    Rename(usize, String),
+    /// Editing the length of a pattern
+    Length(usize, usize, PhraseLengthFocus),
+    /// Load phrase from disk
+    Import(usize, FileBrowser),
+    /// Save phrase to disk
+    Export(usize, FileBrowser),
+}
+
+/// Browses for phrase to import/export
+#[derive(Debug, Clone)]
+pub struct FileBrowser {
+    pub cwd:    PathBuf,
+    pub dirs:   Vec<PathBuf>,
+    pub files:  Vec<PathBuf>,
+    pub index:  usize,
+    pub scroll: usize,
+    pub size:   Measure<Tui>
+}
+
+impl FileBrowser {
+    pub fn new () -> Self {
+        todo!()
+    }
+}
+
+/// Displays and edits phrase length.
+pub struct PhraseLength {
+    /// Pulses per beat (quaver)
+    pub ppq:    usize,
+    /// Beats per bar
+    pub bpb:    usize,
+    /// Length of phrase in pulses
+    pub pulses: usize,
+    /// Selected subdivision
+    pub focus:  Option<PhraseLengthFocus>,
+}
+
+impl PhraseLength {
+    pub fn new (pulses: usize, focus: Option<PhraseLengthFocus>) -> Self {
+        Self { ppq: PPQ, bpb: 4, pulses, focus }
+    }
+    pub fn bars  (&self) -> usize {
+        self.pulses / (self.bpb * self.ppq)
+    }
+    pub fn beats (&self) -> usize {
+        (self.pulses % (self.bpb * self.ppq)) / self.ppq
+    }
+    pub fn ticks (&self) -> usize {
+        self.pulses % self.ppq
+    }
+    pub fn bars_string  (&self) -> String {
+        format!("{}", self.bars())
+    }
+    pub fn beats_string (&self) -> String {
+        format!("{}", self.beats())
+    }
+    pub fn ticks_string (&self) -> String {
+        format!("{:>02}", self.ticks())
+    }
+}
+
 impl HasScenes<ArrangerScene> for ArrangerTui {
     fn scenes (&self) -> &Vec<ArrangerScene> {
         &self.scenes
@@ -267,48 +333,3 @@ impl ArrangerTrackApi for ArrangerTrack {
         self.color
     }
 }
-
-/// Modes for phrase pool
-#[derive(Debug, Clone)]
-pub enum PhrasesMode {
-    /// Renaming a pattern
-    Rename(usize, String),
-    /// Editing the length of a pattern
-    Length(usize, usize, PhraseLengthFocus),
-}
-
-/// Displays and edits phrase length.
-pub struct PhraseLength {
-    /// Pulses per beat (quaver)
-    pub ppq:    usize,
-    /// Beats per bar
-    pub bpb:    usize,
-    /// Length of phrase in pulses
-    pub pulses: usize,
-    /// Selected subdivision
-    pub focus:  Option<PhraseLengthFocus>,
-}
-
-impl PhraseLength {
-    pub fn new (pulses: usize, focus: Option<PhraseLengthFocus>) -> Self {
-        Self { ppq: PPQ, bpb: 4, pulses, focus }
-    }
-    pub fn bars  (&self) -> usize {
-        self.pulses / (self.bpb * self.ppq)
-    }
-    pub fn beats (&self) -> usize {
-        (self.pulses % (self.bpb * self.ppq)) / self.ppq
-    }
-    pub fn ticks (&self) -> usize {
-        self.pulses % self.ppq
-    }
-    pub fn bars_string  (&self) -> String {
-        format!("{}", self.bars())
-    }
-    pub fn beats_string (&self) -> String {
-        format!("{}", self.beats())
-    }
-    pub fn ticks_string (&self) -> String {
-        format!("{:>02}", self.ticks())
-    }
-}