Sony/ATV has extended its deal with songwriter and producer Cass Lowe, whose credits include tracks released by Charli XCX, Chance The Rapper, Labrinth, Clean Bandit, Anne-Marie and Little Mix.“We have been very fortunate to witness Cass defining his art over the past few years, becoming one of the most in-demand UK songwriters”, says Sony/ATV UK President David Ventura.