It's reasonably easy once you get the hang of it.
I'm still at a basic level, I'd say, no original songs yet, all covers. Many unfinished songs in my folder. "Rogue Squadron" is one of my most recent ones.
I've been working for months on Elmer Bernstein's Ghostbusters Theme. It's almost finished, I need to sequence the last part with the key change. That one also uses the VRC6.