“The excellent Calder Quartet performed “ Echeia” by Nathan Davis in the Mozart Hall of the Donauhallen(Composition commissioned by the SWR) with multifaceted tremolo effects and additional sound intervals on the computer. This piece for string quartet and live filtering was inspired by room resonances from amphora to amphitheater and realized by the musicians with the help of modern technology. The entire room should be used by the musicians, which the ensemble managed very well. ”