- Makrokosmos II, for amplified piano
- Makrokosmos I, for amplified piano
George Crumb's "Makrokosmos, Vol. I" and "Vol. II," is one of the enduring compositions of the early '70s, and these fantasy pieces on astrological and mystical themes are typical of the stylized, atmospheric music he wrote at the peak of his fame. Written for amplified piano, the work calls for the performer to play on the keyboard and the strings, as well as to hold down the pedals for sustained, rumbling clusters; make vocalizations and whistle; use various objects to modify timbres; and strike the piano's frame, soundboard, and body for percussive effects. This is a demanding work that requires a pianist of great versatility and virtuosity, and Robert Groslot demonstrated in his 1982 recording that he had fully mastered Crumb's arcane symbology and myriad, precise instructions. There have been several recordings of "Makrokosmos, Vol. I" and "Vol. II," that give Groslot's recording serious competition, notably a handful of all-digital releases that offer finer reproduction than this ADD recording can provide. Still, it is an admirable performance that gives the listener an accurate presentation of this challenging score and captures the mystery and sublimity of Crumb's eclectic music.