Welcome on the homepage of Erich-Thienhaus-Institute, the Tonmeister Department of Detmold University of Music. The tonmeister's job is the technical presentation of a musical performance. Thus he or she has to deal with the acoustical properties of the studio, stage or concert hall, the technical realization of the recording or transmission, and the artistic direction of the performance. Tonmeister education at Erich-Thiehaus-Institute of Detmold University of Music (ETI) focuses on these topics. Based on the ideas of the institute's founder Erich Thienhaus, the tonmeister department has been established in Detmold in 1949. ETI offers education both in science and art. The 10 semester studies are completed with the Diplom-Tonmeister degree. The following pages shall provide an insight to education, student's works and research at Erich-Thienhaus-Institute.