"Composer collider" is a workshop series for composition students and alumni of different universities which should give them the opportunity to work together with a professional ensemble for contemporary music and a conductor.
Musicians of Ensemble Musikfabrik made these video tutorials in which they introduce their instruments and specific playing techniques to composition students.
Dirk Wietheger explains vertical bowing (col legno) on the cello:
Helen Bledsoe is presenting the multiphonics on her flute:
Carl Rosman is talking about the sound-category of small-interval dyad multiphonics:
Bruce Collings shows the playing technic of double bell trombone:
The following video shows impressions from one of the workshops with in Cologne:
photos ©Adam Grabolus