The Time Curve Preludes is a minimalist composition for piano solo by William Duckworth written between 1977 and 1978.
[2] Duckworth used elements of Minimalism, including repetition and accessible harmonies, yet also embraced more quickly changing structures; wide-ranging, complex melodies; and colorful dissonances.
[1] The Time Curve Preludes is a set of 24 short pieces for piano, and has been described by music critic Kyle Gann as the first work of postminimalism.
[4] Along with its elements of minimalism, the preludes utilize many references to piano music of earlier periods, a tenet of postmodernism.
The composer also uses the Fibonacci series in developing proportional and rhythmic patterns, which were set out with the use of a numerical grid.