He commissioned me (i.e, paid) to write his song, and it's all his.

Ah, well, you can't have everything. Maybe I'll go in for a patronage anyways--I'll see how the comic looks in color; if it's sufficiently improved--and it well might be, he said after spending most of his lunch break reading--that $50 gets cut down to a few bucks a month for a color comic, and the song is a bonus.