Show/Hide Musical Typing… ⌘K — Logic Pro X keyboard command of the day

  Show/Hide Musical Typing…    ⌘K

Shows or hides the Musical Typing window. This window displays the Mac keyboard keys with associated musical typing keys identified. Simple to keep the window open to the side while typing. Makes entry from the computer fairly easy and quick.

Play software instruments in Logic Pro — Apple Support

The Musical Typing window appears, showing the layout of keys used for playing notes and changing controller information.