In Search of the Fourth Chord is the twenty-eighth studio album by English rock band Status Quo, released on 17 September 2007. The title is a tongue-in-cheek reference to the rumour that the group always plays the same three chords, and a reference to the album In Search of the Lost Chord by British rock band The Moody Blues. The album's artwork is a parody of the Indiana Jones films.The album saw the return of producer Pip Williams for the first time since 1996's Don't Stop.