karlheinz stockhausen (1928 - 2007) – klang 3rd hour nat rliche dauern 1 24 (natural durations 1 24) (2005/2006) for piano (1 transmitter, 2 microphones, 2 x 2 loudsp., mixing console / sound proj.) 20 frank gutschmidt, benjamin kobler, antonio p rez abell n