Writers Block: Riser House Entertainment Sr. Dir./Publishing + A&R Kirby Mathews has joined Back Blocks Music as VP/Publishing. “Kirby is a songwriter's advocate in every sense of the word," says Founder/CEO Rakiyah Marshall. Adds Mathews, "The team has built a catalog and culture that truly puts songwriters first which is so important to me, as I've dedicated my career to elevating songwriters and protecting their craft." Prior to Riser House, Mathews spent time at Play It Again Music and WinSongs Music Publishing.