This video is a brief introduction and UI overview of the Helio Workstation software which you can download here.
I’ve made a grid containing all the keyboard shortcuts that I could find and that seem to work in this XML file from the projects GitHub page.
| Action | Windows/Linux | Mac | Windows/Linux Alternate | Mac Alternate |
|---|---|---|---|---|
| Toggle Sidebar | Tab | Tab | ||
| Undo | Ctrl + z | Cmd + z | ||
| Redo | Ctrl + y | Cmd + y | Ctrl + Shift + x | Cmd + Shift + x |
| Copy | Ctrl + c | Cmd + c | Ctrl + Insert | Cmd + Insert |
| Cut | Ctrl + x | Cmd + x | Shift + Delete | Shift + Delete |
| Delete | X or Delete or Backspace | X or Delete or Backspace | ||
| Paste | Ctrl + v | Cmd + v | Shift + Insert | Shift + Insert |
| Start Playback | Return or Spacebar | Return or Spacebar | ||
| Stop Playback | Escape or Spacebar | Escape or Spacebar | ||
| Select All | Ctrl + a | Cmd + a | ||
| Drag Viewport | Spacebar + Left Click | Spacebar + Left Click | Middle Mouse + Drag | Middle Mouse + Drag |
| Zoom In | z | z | ||
| Zoom Out | Shift + z | Shift + z | ||
| Rename Layer | F2 | F2 | ||
| Enable All Layers | Dbl click Right mouse btn | Dbl click Right mouse btn |
To free draw a note, hold down Ctrl + click and drag in the piano roll.