Complex sentence: With AYWS, he was featured in a piece called Wundeliguhi (the darkening land) written by Richard Prior, and with Emory, he was featured in a piece titled Black Dog, by Scott McAllister, who was present at the concert event.
Split into simpler sentences: With AYWS, he was featured in a piece called Wundeliguhi (the darkening land) written by Richard Prior. With Emory, Stoltzman was featured in a piece titled "Black Dog" by Scott McAllister, who was present at the concert event.