Apparently the alphabet part was Sophia's idea. Tim wanted her to match the riffs as closely as possible. She noticed that particular riff had 26 notes so she suggested the alphabet. It's like 140bpm apparently
based on the tracklisting they've released, 8/12 tracks on the new album have features, including Steve Vai and Chino from Deftones. Sophia is definitely the standout here, which makes sense for them doing a pop song. it's an interesting experiment in Tim showing a bit more restraint and focusing on songwriting and hooks.