For the one that has the XV88, the Beats & Groove, Drums category will only work if you have an expansion board that has that category on it. The XVs and XPs don't come stocked with those (Excpet for the XP30).

"Beat & Groove" are the patches that are loops, beat loops to be more specific. Examples are on the SRJV12 Hip-Hop Board and the SRJV11 Techno Board.

The "Drums" are drum menus. These are patches in which drum waveforms are assigned to the four tones and then key mapped to behave like a drum set. So "C2" will play a Bass Drum and "F#2" will play Hi-Hat.

The Bass & Drums, Hip-Hop, Techno and Session board all have these for example.

I hope I answered your question.

The Infamous EPU.