Sara Mohr-Pietsch's chosen seismic moment in new music looks to the fall of the Berlin Wall. She reflects on the accompanying rise in the popularity of Eastern European composers as a simplicity in musical language emerged from behind the Iron Curtain.

The story of new music is peppered with events that have altered the course of musical history. For our New Year New Music season, we asked five Radio 3 presenters to each tell the story of one of these "seismic moments". From silence and ambient sounds to riot and revolution, these intriguing events have, in different ways, changed the progress of sound and culture - or, as one of our five suggests, have they?

Written and read by Sara Mohr-Pietsch.