Released on Norah Jones's debut album Come Away with Me in 2002, "Don't Know Why" stands as a defining track of the neo-soul and jazz-pop revival of the early 2000s. The recording features Jones's signature warm, intimate vocal delivery, layered over a lush arrangement of acoustic guitar, upright bass, and soft piano. This track exemplifies the album's signature sound, blending jazz improvisation with accessible pop structures to create an atmosphere of quiet introspection and romantic melancholy. Its success helped establish Jones as a major force in contemporary music, influencing a generation of artists who sought to merge traditional jazz harmonies with modern songwriting sensibilities. The song remains a staple of her discography, celebrated for its emotional depth and timeless quality.