Listen to an excerpt from Zbigniew Karkowski and Brian O'Reilly's The Difficulty Of Being

The Polish experimental musician and composer Zbigniew Karkowski died on 12 December 2013. Richard Whitelaw remembers an artist whose music could "suck the soul out of your body".

The Polish experimental musician and composer Zbigniew Karkowski died on 12 December 2013. Atau Tanaka writes an open letter to an artist of "vision and principle".