Logic Key Commands
Play/stop: Space bar
Record: r
Automation view: a
Mixer: x
MIDI editor: e
Cut at playhead: Command-t
Cut by locators: Control-Command-t
Move region selection to playhead: ;
Shuffle region Left/Right: Command-[ or Command-]
Set locators to selection: Command-u
Cycle (loop): c
Solo: s
Solo only one track: Option and click on the "s" on the track
Mute: m
Bring playhead to start: enter
Move playhead by bar: , or .
Move playhead by marker: Option-, or Option-.
Create marker: Control-Option-‘
Turn metronome on/off: k
Set fader to 0dB: Option-click on fader
Tool palette: t (then press the letter of the tool you want)