Simeon ten Holt worked out this composition over several years. The harp brings forth a more transparent, more diffuse timbre than the piano, a singing tone-space. Simeon ten Holt (1923-2012), one of the Netherlands' preeminent minimalists, is best known for Canto Ostinato, for one or more keyboards. The piece is modular, with 106 sections, each of which can be repeated an infinite number of times, left to the performers' discretion. The composer estimates that the minimum length of time required for the piece to make the appropriate impact is about 30 minutes. The score is arranged so that there is enough material for at least four players, and in its most popular configuration, it's played by four pianos. When a single player tackles it, though, he/she is given the choice of playing any of the lines, so there is room for considerable variation between performances in which material gets highlighted. In this recording, Assia Cunego plays the work on solo harp.