"I'm-a keep on smoking till I can't hit another note," sings R&B buzz magnet Abel Tesfaye on this narcotic jam (whose title refers to the Earth, not this mag). Rather than slow him down, weed seems to give him vocal superpowers, as he sends his icy croon into the stratosphere over acoustic guitar.

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Gallery: Random Notes, Rock's Hottest Photos

“Time to Pretend”

Listening to MGMT’s breakthrough song, one might interpret it as being about the excesses of rock stardom, but it’s actually about the duo’s pet praying mantis. Ben Goldwasser and Andrew VanWyngarden told Rolling Stone they got the idea from the insect's jerky movements. The mantis died, but the two bandmates kept the egg sack and allowed the hundreds of eggs to hatch. “We tried to name them all, but they died after a day,” said Goldwasser, with VanWyngarden chiming in, “But the praying mantis dance inspired us.”