Live music shows (Rowdy, loud, drunk) shouldn't really mix with boats (wet, dangerous) but we're seeing increasing numbers of stars performing to their fans on custom designed cruises.
Our jealousy alarm nearly exploded when we saw the line up for December's S.S. Coachella, which will see the US festival set sail with a line-up including Pulp, Hot Chip, Warpaint and Sleigh Bells.
However, Coachella are not the first (or the last) to combine gigs with the high seas - take a look through the pictures to see who else has been getting in on the act.
Exclusive shots from one of of year's first festivals
Proof that teen stars aren't all like One Direction - the future kings and queens of UK music