Wolfgang Rihm’s In Verbundenheit, which is dedicated to the Arditti Quartet, was premièred on 10.05.2014 at the Witten New Music Days, one of the world's leading contemporary music festivals.

This Saturday at 23:00pm CET/CEST, Tom Service talks to Harry Vogt, director of the Witten New Music Days, and they will play recordings from the festival, among them the world première of In Verbundenheit for string quartet.

Listen live on BBC Radio 3.