African American guy & white guy singing, upbeat.....there's this samurai asian guy in one scene, and in another is this kid in the hospital with his mom and dad. The samurai sends this black crow thing out who like....checks on the boy and comes back to give the samurai news then the samurai gets on a horse and is jamming to the hospital to get to the boy in time. I think at the end he reaches the boy and the boy comes awake and the samurai dies....or something like that! What is the name of the band or the song??