Complex sentence: Jake Clemons is a singer/songwriter first and foremost with a talent all his own, though he's mostly famous for being the nephew of E Street Band member, Clarence Clemons his role model and mentor.
Split into simpler sentences: Jake Clemons is a singer/songwriter first and foremost with a talent all his own. He is an American musician and the nephew of E Street Band member, Clarence Clemons his role model and mentor.