Is there any way to have two melody synth tracks?

If I wanted to replace of the other tracks, say arp, with a melody or chords, what would be a way to do this?

Well, at least for now you can’t really replace the arp track. But you can use the chords track pretty much as another melody synth track without any issues. With the app you can load up some other sounds as well.

you can even record more notes in real time on top, like stacking them in full pleasure.