Released on Norah Jones's debut album Come Away with Me, "Don't Know Why" stands as a defining track of the early 2000s neo-soul and jazz-pop revival. The song features Jones's signature warm, intimate vocal delivery, layered over a lush arrangement of piano, strings, and soft percussion that captures a quiet, reflective mood. As a centerpiece of the album, the recording helped establish her reputation as a sophisticated vocalist capable of blending jazz sensibilities with contemporary pop structures. Its enduring appeal lies in its atmospheric production and the emotional vulnerability expressed in the lyrics, making it a staple of her discography and a touchstone for fans of the era's acoustic-influenced sound.