Don't Know Why

The harmony of 'Don't Know Why' is rooted in jazz voice-leading tradition, with extended chords (maj7, 7th) and a chain of secondary dominants that gives the progression constant forward motion. The use of Bb7 as a dominant approach to the IV and D7 as a secondary dominant to the vi are hallmarks of jazz songwriting. Despite this sophistication, the progression feels natural and unforced, matching the song's understated emotional tone. The F7sus4 at verse endings adds a characteristic moment of unresolved tension that mirrors the lyrical theme of uncertainty and longing.

Jesse Harris wrote 'Don't Know Why' and first recorded it for his 1999 album Jesse Harris & the Ferdinandos. Norah Jones, who had been performing with Harris in the New York City club scene, connected deeply with the song and began performing it live. When she entered the studio to record her debut album Come Away with Me, the song was a natural choice for inclusion.

Written by Jesse Harris and brought to life by Norah Jones' smoky vocals and understated piano, 'Don't Know Why' became the defining song of the early 2000s jazz revival. Its warm, unhurried elegance won three Grammy Awards and introduced millions of listeners to a gentler alternative to the era's pop-rock dominance.