Complex sentence: While in college he joined a band-as a songwriter and rapper-called "milEs" featuring Kevin Colis, Jon Harris, Jared Easterday and later Jason Galuten (son of famed producer Albhy Galuten).
Split into simpler sentences: While in college he joined a band called "milEs" as a songwriter and rapper. His bandmates included Kevin Colis, Jon Harris, Jared Easterday and later Jason Galuten (son of famed producer Albhy Galuten).