The beat is Caribbean, with hints of Seventies funk and Eighties electro percolating up through the mix. There are burly rock power chords. The chorus is a big, delicious bubblegum flavor burst. In other words: The first new No Doubt song in nearly a decade sounds an awful lot like No Doubt a decade ago. What's surprising about "Settle Down," however, is how well the sound has held up: Strip some of the production gloss off "Settle Down," and it could be a Santigold record. But No Doubt are unapologetically themselves: still a lovably ditzy SoCal party band, right down to Gwen Stefani's surfer-chick beatitudes: "I'm hella positive for real. . . . Nothing's gonna knock this girl down."

Listen to "Settle Down":

“Is It True”

As the British Invasion reached its peak in 1964, Brenda Lee went from Nashville to London to record one of her hardest-rocking hits, her perky vocal backed by a stuttering, squalling guitar. That guitar was played by session musician Jimmy Page, yet to skyrocket to fame with first the Yardbirds and then Led Zeppelin. "She said to me, 'I've come here to make a record with the British sound,'" remembered producer Mickie Most. "She felt she wouldn't get the same sound in Nashville because they're only just catching up on the British beat group sound of about six months ago."