Wondering is there a AU or maybe M4L plugin with preset drum patterns like old 70s rhythm boxes had - CR-78, Korg Mini Pops, etc… with ability to assign midi notes and send to midi out.
Firest of all I mean oldie rhythm types like rock / rumba / disco etc… but possibly more rhythms incl. “modern” are ok, maybe even dozens or hundreds presets, perfectly with INTRO / BREAK / A+B variations, maybe some other useful tools.