I've written quite a few tunes with older versions of GarageBand, and I always use the MIDI editor / piano roll (or whatever that note-by-note editor is called) for creating drum tracks. In the older versions of GarageBand, there was a legitimate, real, snare drum roll. It was a plain old regular note in the MIDI editor, just like a regular snare hit or bass kick. But I can't find any such thing in GarageBand 10.0. When I google for how to make a drum roll, all I see is people cramming together regular snare hits, which sounds ugly and electronic to me. For an example of what I'm talking about, listen to my tune here, at about 2:40 and 2:45. I used rolls like these throughout the tune, but these two are longer and more noticeable.
Does anyone know how to do this in GB 10.0?