Sonata for Two Pianos in D Major, K. 448/375a | Fantasie for Piano Four Hands in F Minor, D. 940

Classical piano duo refers to repertoire and performance for two pianists, either at one instrument (piano four hands: primo and secondo sharing a single keyboard) or at two instruments (two‑piano literature). The genre grew out of late‑18th‑century domestic music-making and salon culture, then blossomed in the 19th century when composers treated the medium as both an intimate chamber vehicle and a symphonic surrogate. Its sound world ranges from delicate, interlocking textures to orchestral power and color achieved through doubled keyboards. Core repertoire spans Mozart and Schubert’s four‑hand fantasies and sonatas; Romantic dances and transcriptions by Brahms, Dvořák, and others; and 20th‑century originals by Ravel, Debussy, Stravinsky, Rachmaninoff, Poulenc, Lutosławski, Shostakovich, Reich, and Ligeti. Today, piano duos commission new works, revive historic transcriptions, and bring orchestral canvases to the recital stage.