Since 2021 Swiss composer Felix Profos and drummer Peter Conradin Zumthor have performed as the duo Grund, Profos performing on harmonium and on the 1973 Italian organ Bontempi Pop3, Zumthor on bass drum, gong, bells & snare, their extended work on this self-titled album a tranquil and meditative work of slow transitions with moments of terse activity, receding with grace and serenity.