"Cannonball" is the opening track from Supertramp's 1985 album Brother Where You Bound.

"Cannonball" was written and sung by keyboardist Rick Davies entirely in the chord of G minor.

When “Cannonball” was released, the song’s lyrics (like “I’m washing my hands on you / How could you be so untrue”) were, contrary to belief, not about Roger Hodgson, but instead (according to a French radio interview) a “less than perfect” concert promoter Rick Davies wouldn’t name.

[4][5] Near the LP version's fade-out, the brass play a citation of the Jazz tune Topsy.

The promo video was directed by Steve Barron and depicted a caveman who goes after his wayward cavewoman, who left his home to travel to modern day Grand Junction, Colorado, to see the band rehearsing the song on stage.