Andy's a cappella group has been a recurring motif throughout the show since his debut.
In the episode Launch Party, Andy sings "Take a Chance on Me" by ABBA with his a cappella group backing him up on speakerphone. Actor John Michael Higgins is one of the other voices. Here Comes Treble is portrayed by the University of Virginia Hullabahoos.
The members of Here Comes Treble, class of '96:
- Carl 1 and Carl 2 (not on speaking terms after they ended their civil union)
- Jingle Jangle
- Sandwich (scheduled to undergo gastric bypass surgery)
- Boner Champ (aka Andy - got this nickname for humping a snowman)
- Broccoli Rob
- Doobie (now a school bus driver)
- Pubey Lewis & the News
- Hopscotch (his mom won't let him out on weekends)