A native of Vienna/Austria, Thomas took up drumming at the age of 5. In addition to lessons at local music schools and years of private tuition, Thomas was formally educated at the Vienna Conservatory of Music.
After leaving the conservatory, Lang began working professionally - working his way through the European Pop, Rock and Jazz scenes.
In addition to his work as a session musician (Thomas has played with Paul Gilbert (Mr. Big/Racer X), John Wetton (UK, King Crimson), Robert Fripp, Glenn Hughes (Deep Purple), Tina Turner, Robbie Williams, Kelly Clarkson, Sugababes, Geri Halliwell (Spice girls), Emma Bunton ("baby spice’), Victoria Beckham ("posh spice"), Ronan Keating, Steve Hackett, Boyzone, 911, Falco, Nina Hagen, Steve Jones, Mick Jones (the Clash), The Commodores, George Michael, Doogie White (Rainbow), Bill Liesegang, Gianna Nannini, Sertab Erener, Vienna Art Orchestra, Bonnie Tyler, the Vienna Art Orchestra, Save the Robots, Stork, Terabite, Schwarzenator and many more) Lang’s 1995 solo release, "Mediator" topped the charts in Europe and garnered rave reviews for its innovative Jazz/Dance/ProgRock sound.
Thomas has performed at every major international drum festival and has toured the world many times over as a sideman as well as solo performer. Thomas has appeared everywhere from "Top of the Pops" to the Eurovision Song contest, from sold-out football stadiums to the Modern Drummer Festival.