Arguably the most important group on the European avant-garde music scene for the past 50 years, Dutch collective Instant Composers Pool will perform four dates in Ireland over the next few days. Brian Coney talks to ICP co-founder, virtuoso drummer and multi-instrumentalist Han Bennink about free jazz, opportunities for younger musicians, constantly pushing the boundaries and more. ICP play the following dates. More info here. Thursday, November 2: Culturlann, Derry Friday, November 3: The MAC, Belfast Saturday, November 4: The Sugar Club, Dublin Sunday, November 5: Triskel Arts Centre, Cork Some of my favourite ICP releases include your 1972 solo…