Delete key
Undo
Command-Z
Redo
Shift-Command-Z
Open Voice Memos preferences
Command-Comma (,)
Minimize the Voice Memos window
Command-M
Hide the Voice Memos window
Command-H
Hide everything except Voice Memos
Option-Command-H
Enter full-screen view
Control-Command-F
Exit full-screen view
Esc (Escape) key
Quit the Voice Memos app
Command-Q or Command-W