an example can be found on AMOSPro_Examples:Examples/H-7/Help_72.AMOS
Starts your Tracker music playing through your loudspeaker.
Track Play banknumber
bank number is the number of the memory bank containing your tracker module. If it's omitted AMOS defaults to bank 6.
Track Play, banknumber,patternnumber
A pattern number can also be added as a starting point from which the Tracker module is to be played.