Happy Apple is an American jazz trio from Minneapolis, Minnesota.
All three members compose music for the group, which places equal emphasis on improvisation. Happy Apple plays a brand of jazz music drawing on several other genres; the group's members play in other bands ranging from indie rock and heavy metal to free jazz and electronic. The best known of these is The Bad Plus, in which King also plays drums.
- Blown Shockwaves & Crash Flow (1997)
- Part of the Solutionproblem (1998)
- Body Popping Moon Walking Top Rocking (1999)
- Please Refrain from Fronting (2001)
- Youth Oriented (2003)
- The Peace Between Our Companies (2005)
- Happy Apple Back on Top (2007)
- DiPietro, Phil. "What Part of the Solution Problem Don't You Understand? Happy Apple bassman Erik Fratzke Refrains From Fronting". All About Jazz. Archived from the original on 2010-01-16. Retrieved 2010-06-19.