Originale: Dark Blue Sheet Music by No Doubt. Gwen Renée Stefani , Tom Dumont. No Doubt. Hal Leonard , Universal. English. 0-7692-9768-4.
Traduzione: Blu scuro Sheet Music by No Doubt. Gwen Renée Stefani, Tom Dumont. Hal Leonard, universale. Inglese. Solero. Piano. Vocale. Chords.