Preludes and Fugues, Op. 87 is a cycle of 24 preludes and fugues for solo piano by Dmitri Shostakovich, composed in 1950-1951 and first published in 1951. Stylistically rooted in the contrapuntal tradition, the set blends neoclassical forms, terse modernist harmony and varied pianistic textures, marking a mature exploration of form and tonality in Shostakovich's postwar output and reflecting mid-20th-century approaches to counterpoint and piano writing.