Complex sentence: Rehearsing in a band called Goat Deity, Wynn met Precoda, who had answered an ad for a bass player, and the two joined to form a new group, with Precoda switching to guitar.
Split into simpler sentences: Rehearsing in a band called Goat Deity, Wynn met Precoda, who had answered an ad for a bass player. The two joined to form a new group, with Precoda switching to guitar.