I grew up in the time just when cassettes were waning and CDs were growing. And so mix tapes - and not mix CDs - mix tapes were an important part of the friendship and mating rituals of New York adolescents. If you were a girl and I wanted you - to show you I like you, I would make you a 90-minute cassette wherein I would show off my tastes. I would play you a musical theater song next to a hip-hop song next to an oldie next to some pop song you maybe never heard, also subliminally telling you how much I like you with all these songs.