You hit the button, only Peter knows for which styles you get variations. I think it's a lot. But in the drums not so much. So when you like it freeze it.

RealTracks is another thing. I don't really use it, but you can have 4 drum tracks there, and then have them spliced or cut in and out at measure x etc. It allows WAY more control, if that's what you really want.

When you hit the button again you get a new variation, unless you froze a track and that stays static.
Or freeze the whole thing.

I find, that for practice purposes, I like most of the stuff and it serves it's purpose. My timing is forced to 'right' and I don't get quite so bored. And I'm playing horn or keys so I can come in and out. Change to 4 verses or 7, or put it in a loop or just play the same thing over and over.

It's dependant on your intended use. If you are shooting for a big contract, then REalBand is probably the way to go, and what to learn. Mix and match more, and use song shift and other stuff to enhance your tracks.

I'm a quick and dirty guy.

John Conley
Musica est vita