Vosh

Vosh was a trumpet player who played in an orchestra on the asteroid of Stanalan. He and his friend, Harby, helped the Doctor,  Amy,  Rory and Perpetual Pete in stopping the Drexxon from releasing his own kind.

He played in the orchestra at the end, which resealed the Perpetuity Chamber, trapping the Drexxon once more. (NSA:  Death Riders)