Ian,

if there is a certain beat you need and you can't find it in any of the real drums, be aware that Real Band comes with a grid style of Midi drum creator. You can find it here:

(from the main menu) EDIT > MIDI > Drum/Patch Map > Drum Grid Editor

If you've ever used FL Studio to create a drum pattern, this grid works nearly the same way. Once you create the pattern and save it with a name, you can load it into a song as follows:

EDIT > MIDI > FILL TRACK WITH MIDI DRUM PATTERN


menu location might be different depending on the version of RB you are using.

Here's a link to an old article explaining how to use it (scroll down to DRUM GRID EDITOR)
https://www.pgmusic.com/tutorial_stylemaker1.htm

https://www.dropbox.com/sh/ey71h8ep047758h/AAC12jNM0Hz9Q8zsh5iDeqNHa?dl=0