iOS Tap the Play button to start the backing track.
Keyboard: 
2023.11 or higher—Space bar toggles Play/Stop; Period key (.) toggles Pause/Play from cursor
2023.7 or below—Space bar toggles Play/Pause; Period key (.)—Stop
 
Android Touch the Play button to start the backing track.
Keyboard:  Space bar toggles Play/Pause; Period key (.)—Stop
 
Mac
2023.11 or higher—Space bar toggles Play/Stop; Period key (.) toggles Pause/Play from cursor
2023.7 or below—Space bar toggles Play/Pause; Period key (.)—Stop
(Or use the mouse to click the buttons in the Player controls)
 
 
Start playback from any measure by tap/hold on the measure to select it, then tap on the Play button in the selected measure. (Mac: double-click the measure)
 
 
 
Start playing 4 or 8 measures from the end as an intro.