Rocketflip. This arrangement is based on the 2008 album version on "We Sing. We Dance. We Steal Things." Realistically, a euphonium/baritone may need to play the 3rd trombone part (I also apologize for how repetitive it is). The original key is B major and I decided to transpose up to C rather than down to B-flat because I didn't want to have a low E-flat in the 3rd part (thus requiring a trigger to play it).