George Crumb „Makrokosmos. Volume I” 1972:

Dosyć to niespokojne, agresywne. Pianiści częściej grzebią we wnetrzu fortepianu niż grają na klawiaturze.
Wiki: „Makrokosmos is a series of four volumes of pieces for piano by American composer George Crumb. The name alludes to Mikrokosmos, a set of piano pieces by Béla Bartók, one of Crumb’s favorite 20th-century composers. The first volume of the set was composed in 1972, while the last was completed in early 1979”.