I want to use them in songs for things as like a keyboard patch for phrases that keep going in (mostly) one direction. But it's hard to figure out how to do it? All the stuff I find is about continuous glissandos, which is cool and all, but not what I'm looking for...
you could just record what you need, and then double it in octaves and fade the volume as needed. would take a little bit of busy work, but it will get the job done