Jon Leidecker (aka Wobbly) has been producing music under the name Wobbly since 1990, improvising with recordings to produce music which inherently resists the act of being captured. Recent performances deploy a battery of mobile devices driven by their built-in microphones, reacting instantly with error-prone variations on the notes and sounds they believe themselves to be hearing: a tightly-knit orchestra with inhuman reflexes, resulting in structures which the human performer influences more than controls. Currently touring & recording with both Negativland and the Thurston Moore Ensemble, other live and studio collaborators include Zeena Parkins, Dieter Moebius & Tim Story, People Like Us, Matmos, Laetitia Sonami, Fred Frith, Tania Chen, Sue C., The Freddy McGuire Show and Sagan. In 2009, the Museum of Contemporary Art in Barcelona commissioned his eight part podcast on the evolution of sampling & collage music, 'Variations', which Leidecker has presented as a lecture at Mills, Stanford, Oxford and Peabody Conservatory. In 2015 he inherited Negativland's long-running Over The Edge radio live mix program, broadcasting from Berkeley's KPFA FM.