Jonathon Haffner was raised in Southern California where he began playing saxophone at an early age. While in California Jonathon began studying saxophone with Phil Sobel.
Since moving to New York City Jonathon has performed/recorded with Butch Morris, Kenny Wollesen, Bill Frisell, Jason Moran, Steven Bernstein, Medeski, Martin, and Wood, Uri Caine, Jim Black, Eddie Henderson, Chris Potter, Sex Mob, Cindi Lauper, Jesse Harris, Brazilian Girls, Brian Blade, Graham Haynes, Jonas Mekas, The Nublu Orchestra, Ilhan Ersahin, Elliott Sharp, Art Baron, David Binney, Rickie Lee Jones and Red Baraat
Jonathon also co-lead the group 'Himalayas' with drummer Kenny Wollesen, and performed in the ensemble 'Now We Are Here' which is led by filmmaker Jonas Mekas.
His album 'Life On Wednesday' was produced by David Binney and was released in October 2009.