Das Atmende Klarsein / ...Sofferte Onde Serene... / Con Luigi Dallapiccola (Zeitfluß 93) is an album by Italian composer Luigi Nono, released in 1993. Its music exemplifies Nono's avant-garde approach, combining serial-influenced structures, electroacoustic techniques, extended vocal and instrumental timbres and deliberate spatialisation, and the 1993 release situates these pieces within his late-career experimental phase, issued posthumously.