If you have the sound from a guitar or piano as left instrumentsound,
then it's not easy to hear any difference.
Select organ or strings, see that the volume for that part is not too
low, then you should hear when the left hold is "on", because when your
fingers leave the keys, the organ or strings will continue to hold the
played chord as long as the APC button is on.
If you don't start the rhythm, you'll still have the left chord playing
until you turn off the APC, or start and stop the rhythm.
GJ

[This message has been edited by Gunnar Jonny (edited 03-05-2002).]