The series provides a platform for local and international artists/musicians, who oscillate between various musical and artistic genres. Within the framework of Wavering Worlds, multiple forms of multi-media performances and concerts are presented. Concert Tuesday, May 3rd, 7:30 pm Andreas Trobollowitsch – Ventorgano Andreas Trobollowitsch is a Vienna-based composer, performer, sound- and installation artist. In his works, he uses mainly prepared musical instruments, modified fans, tapes and field recordings. The Ventorgano is an electroacoustic synthesizer, consisting of guitar strings, resonating bodies and prepared fans that allows its player to control micro- rhythmical elements and subtle changes in the overtone spectrum.