Throughout the 1990s, each played in and composed for various jazz and experimental combos by day and, by cover of night, danced..J&J have released numerous EPs, LPs and remixes since 2004 on record labels such as Dekmantel and Golf Channel Recordings, and on Workshop and Off Minor Recordings as Magic Mountain High, together with David Moufang (aka Move D), as well as several ambient, film soundtracks and multimedia projects. J&J’s fully improvised hardware live shows have been highly regarded in the past few years for their musicality and versatility.