I played several genres of music on the speaker, from my morning classical playlist to some R&B favorites. Where music delivery shines is in bass-forward music, like R&B, pop, and rap. That's thanks to Sony's handy Ult button, which amplifies the bass of any song playing on the speaker -- I pressed it to bring my songs to life. It immediately makes subs and mids crisp and creates a heartier sound to my music.