John Butcher / soprano saxophone
Christian Kobi / soprano saxophone
Hans Koch / soprano saxophone
Urs Leimgruber / soprano saxophone

A unique saxophone quartet from 4 distinctive players, all on soprano sax -- John Butcher, Christian Kobi, Hans Koch, and Urs Leimgruber -- creating an incredible array of sound and spontaneous composition with profound technical prowess and discerning discretion in dialog.

No relation to the sparkling wine of the same name, Cold Duck is instead a series of nine biting improvisations by S4, an ad-hoc, all-star quartet of soprano saxophone innovators – one British, John Butcher, and the others Swiss: Urs Leimgruber, Hans Koch and Christian Kobi, the last of whom is also a member of the all-saxophone Konus Quartett, which interprets notated music.

"4 soprano saxophones and 4 friends in an unveiling and resonating output of creative energy in a form of improvised structure. There is no miss here. Experienced musicians and excellent skills connected with talent build up sonorous structures which surround the listener as an evolving ambience.The clichees of free-improvised music luckily steer away from this disc but you need proper surrounding, time and space to truly appreciate this form." – (Monotype)

S4 Live at Spazio 0’ Milano (2016)
https://www.youtube.com/watch?v=0hAVMdu31WQ