Igor Stravinsky’s Four Preludes and Fugues (1969) are his final compositions, arranging four pairs from J. S. Bach’s Well-Tempered Clavier for chamber orchestra (BWV 851 & 852, 864 & 865, 870 & 871, 881 & 882). Each prelude-fugue pair is presented in its original key—C♯ minor (Prelude IV & Fugue IV), E♭ major (X), B♭ major (XI), and B minor (XXIV)—and flows without pause, creating an approximately 24-minute continuous arc. The transparent orchestration brings wind and string timbres into dialogue, requiring precise balance to maintain the integrity of Bach’s voice within a modern ensemble context.