Dragon Voice Vol 2

Dragon Voice Vol 2 by Yuriko Nishiyama. A Romance manga rated Teen, published in English by Tokyopop in 2004.

Fourteen-year-old street dancer Rin Amami dreams of singing like his late mother, but his voice is harsh and grating. After a chance encounter with the Beatmen, a pop group managed by the small idol agency Redshoes, Rin becomes the group's unlikely fifth member, because the agency's head believes his voice is the legendary "Dragon Voice." A high-energy story about music, friendship, and finding your sound.