Born in 1971 in Graz, he lives in Steirisch Lassnitz, Austria. He  studied composition and music theory with Hermann Markus  Pressl, Beat Furrer, and Younghi Pagh-Paan, as well as organ performance. He likes tea and dislikes lawn mowers and Richard  Wagner.

His music is not a vehicle for conveying extramusical content  such as emotions, philosophical or religious ideas, political  propaganda, advertising, or the like. Nor is it a language for communicating nonmusical meanings. Lang conceives of music as  an autonomous and self-sufficient acoustic object. Rather than  using sound as a tool, he explores it, allowing it to reveal the full  richness and beauty of its inner nature. Only when sound remains  simply sound can it be perceived for what it truly is: a temporal  phenomenon; audible time.

Selected works: ägäische eisberge. for viola (2006), dangerous  foxes are illusions. for violin, cello / clarinet and piano (2006),  vom mond.chamber opera (2006), architektur des regens. opera  for two voices, choir, eight instruments and dancer (2007), drei  goldene gesichter. for string quartet (2007), the moon in a moonless sky. (two.) for four percussionists (2007), the book of serenity.  for 16 instruments (2008), the ocean of yes and no. for 16 instruments (2008), BUCH ASCHE for three voices, choir and orchestra (2009), schnee im august. for ensemble (2010), vier gefäße.  staub. licht. for string ensemble (2011), siebzehn stufen. for large  orchestra (2011), the ugly horse. for soprano and ensemble (2012),  schwarzes licht. for zither and large orchestra (2013), seven views  of white. for string quartet (2013), the beautiful guests. opera  (2013), the thin tree. for large orchestra (2014), viola. harmonium.  orchester for viola d’amore, harmonium and orchestra (2015),  fliessende berge. for piano (2015), weiße farben for ensemble  (2016), bright darkness for quartet (2017), parthenon for ensemble (2018), coelum obscurum for ensemble (2019), linea mundifor  ensemble (2019), allmännig for ensemble (2020), ionisches licht  for orchestra (2020), tönendes licht for organ and large orchestra (2020), QVIS EST for sixth-tone harmonium and ensemble  (2021), pflaumenblüten for orchestra (2021), Das wahre angesicht  for organ and orchestra (2024).