Introducing KATALYST, Kat Hall and her grandson Rylee Hall. Rylee is a drummer at Huntington Beach School of Rock . Kat has been a Seal Beach Resident for 28 years! Kat and Rylee are currently recording an album with some big name artists. Rylee plays at Hennessy’s often with Paul Mars Black from LA Guns, and Kat and Rylee have been seen performing is locations in the North OC area.