Since the early 1980s Thomas Lehn has been working as an author and performer of contemporary music. Parallel to his work as a pianist, since the early 1990s his most widely renowned work has been performing and producing live-electronic music. Rooted in the experience of a wide spectrum of musical fields based on his background as an interpreting and improvising pianist in classical, contemporary and jazz music, and having been involved in numerous other projects like music theatre, dance, multimedia etc, he has been developing an individual language of electronic music. The electronic equipment he uses consists of analogue synthesizers from the late 1960s, and since 1994 in particular the EMS Synthi A. Besides the substantial sound qualities of its analogue synthesis, the ability of this modular instrument to modify electronic sounds directly, as well as to combine and to control several parameters of the sound synthesis at the same time, allow him to spontaneously act in close contact with the various structural levels of the musical process.
In 2000 his solo album Feldstärken was released on German label Random Acoustics. Today his discography totals around 80 CD publications. Long term collaborations include ensembles KONK PACK, TOOT, THERMAL, FUTCH, MIMEO, SPEAK EASY, 6IX, VARIO-34, as well as duos with Marcus Schmickler, Tiziana Bertoncini, Gerry Hemingway, Paul Lovens, Frédéric Blondy Urs Leimgruber and John Butcher.