Conceived as an answer to Jay-Z's "Empire State of Mind," this ode to West Coast ladies is gleefully over-the-top — a thumping, synthy summer anthem that screams, "This is a summer anthem!" Snoop Dogg's lyrics are marginally better than Perry's lines about "Sippin' on gin and juice/Laying under the palm trees," and you can bet your SPF 80 that the buoyant tune (co-penned by Dr. Luke and Max Martin) will lodge itself in millions of skulls.

“Helen Wheels”

A rollicking good-time hard rocker, "Helen Wheels" was not about a woman but about Paul McCartney's Land Rover, the anthemic chorus voicing the vehicle's reckless joy as "she" took to the road. The song was added to the U.S. version of Band on the Run but was issued only as a single in McCartney's native U.K. "I like that because it's a British road song and there's not many of those around," said McCartney. "It's always Route 66. But Carlisle? How many songs have got Carlisle in them?"