Tracks, Busses, and Submixes

Keyboard shortcut
Function
CommandTCommand-T
Adds a new track to the Timeline.
CommandControlTCommand-Control-T
Adds a new bus to the Timeline.
CommandOptionTCommand-Option-T
Adds a new submix to the Timeline.
CommandShiftTCommand-Shift-T
Removes the selected track, bus, or submix from the Timeline.
TT
Mutes the selected track.
YY
Solos the selected track.
ControlArrowUpControl-Up Arrow
Selects the track above the currently selected track.
ControlArrowDownControl-Down Arrow
Selects the track below the currently selected track.
ShiftControlArrowUpShift-Control-Up Arrow
Adds the track above to the current selection.
ShiftControlArrowDownShift-Control-Down Arrow
Adds the track below to the current selection.
F5F5
Locks the selected track.
EE
Shows or hides envelopes for the selected items.
CommandGCommand-G
Groups the selected tracks.
ControlGControl-G
Enables groups.