Klaus Lang (*1971, Graz/AUT) lives and works as an independent composer and organist in Styria and Berlin. He studied composition, music theory and organ at the College of Music and Performing Arts in Graz and has received numerous commissions from festivals. Klaus Lang’s music is no language used to communicate non-musical content. Music is seen as a free and selfstanding acoustical object. In his work he is not using sound, sound is explored. Only when sound is just sound it is perceivable as that what it really is: a temporal phenomenon – audible time. Klaus Lang sees time as the genuine material of a composer and at the same time also the fundamental content of music. In his view musical material is time perceived through sound; the object of music is the experience of time through listening.