Hi John,
I've got all 4 boards. I must admit I haven't tried the drums as yet, I 've only used sounds to play melodies.
I could find the list and see what's on expansion board 4.

It's a bit of an extravagance getting all 4 boards, but I don't regret it.

best wishes
Rikki

[QUOTE]Originally posted by bruno123:
[B]Do any one of the four sound boards include different drums sets?