There kinda/sorta is an FM modulation in Renoise, under the distortion setting called “Fold”, but it’s not subtle, and not really FM. Sounds fun, though!
Thanks, EatMe! Well, it’s not a finished track, but a track that I begun working on last night. After about 2 hours, that’s what I came up with. I do agree, the silences could/should be longer and I will adjust for that. In fact, I believe I can add/remove a fair amount of parts to make this a longer piece rather quickly. I’ll take your advice -