Freefonix

The series focuses on three musical 'Freewave' renegades that make up the fictional band of the same name. Using the power of the Thirteenth Note, a mystical musical energy source, they take part in musical battles against antagonist band Mantyz in order to keep their home city of Los Bosmos safe from the evil Sonic Lord known as Vox and the money-making schemes of Mya De Zya, the head of ComaCo, a record label and corporation who produce manufactured 'prepsi' musical acts. (wikipedia)