Re/code: Bob Moczydlowsky, Twitter’s head of music for the past year, is departing the company next month, according to his own Twitter account. Moczydlowsky joined Twitter in early 2014 to help serve as a liaison between the service and the music industry. He came from Topspin Media, where he helped artists market to their fans. Moczydlowsky didn’t specify why he is leaving, or where he is headed next.