What does it mean to be American? That's the question songwriter Rostam Batmanglij has been reflecting on in his new album, American Stories. Batmanglij, known mononymously as Rostam, was born and raised in the United States, but his parents come from Iran. "My mom had always been like, 'you should blend Iranian music with what you do like more than you ever have,'" Rostam told NPR's Leila Fadel.