Utakata:Overdrive

ウタカタ・オーバードライブ

The story takes place in the fantasy world of Planet Note. Humans, who can no longer sing, pair up with members of a tribe of non-humans that can sing. These are the sound users "Otokata" and the singers "Utakata." Together they use the sounds and songs as weapons in competition. (Source: Anime News Network)