you can create channels now!!! :D

src/ui/app.py

@@ -2,8 +2,11 @@ from textual.app import App, ComposeResult
 from textual.widgets import Footer, Tab, Tabs, Header
 
 from ui.widgets.sidebar import Sidebar
-from ui.widgets.timeline import Timeline
+from ui.widgets.timeline import Timeline, TimelineRow
 from ui.widgets.project_settings import ProjectSettings
+from ui.widgets.channel import Channel
+
+from project import ProjectChannel
 
 from song_player import SongPlayer
 
@@ -22,6 +25,17 @@ class AppUI(App):
         
         self.song_player = SongPlayer(self)
     
+    def create_channel(self, name: str):
+        self.query_one("#channels").mount(Channel(
+            len(self.project.channels),
+            name,
+        ), before=-1)
+        self.query_one("#rows").mount(TimelineRow())
+        
+        self.project.channels.append(ProjectChannel(
+            name
+        ))
+    
     def on_mount(self):
         self.song_player.play_song(self.app.project)