Discography
- For McMahon's releases with Something Corporate, see Something Corporate's discography
- For McMahon's releases with Jack's Mannequin, see Jack's Mannequin's discography
- Andrew McMahon (1999)
- Hidden in Plain View - Life in Dreaming (2005, piano on "Halcyon Daze")
- Later Days - Catch This Epidemic... (2005, piano on "Evan's Epidemic")
- Tommy Lee - Tommyland: The Ride (2005, vocals on "Hello Again" and "I Need You")
- William Tell - You Can Hold Me Down (2007, piano on "Fairfax")
- The Spill Canvas - No Really, I'm Fine (2007, piano on "Saved")
- The Academy Is... - Fast Times at Barrington High (2008, piano on "After The Last Midtown Show")
- The Academy Is... - Lost In Pacific Time EP (2009, piano and vocals on "Sputter")
- Elliot Minor - Solaris (2009, lyrics on "Tethered")
- O.A.R. - King (2011, co-writer on "Over and Over")
- Erland - All I've Got EP (2011, producer)
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