Click to listen to Sleeper Agent's 'Get It Daddy'

"We gonna have a ball/But we ain't got no need for chains," Sleeper Agent shout on their debut. The Kentucky sextet aren't the first band to hearken back to bygone notions of teenage abandon—they're just really great at it. In their retro paradise, Strokes guitars and Pixies power surges bump up against overheated Sixties-rock riffs, lusty Seventies bubblegum bluster and girl-group cuteness, while 18-year-old frontwoman Alex Kandel sings about raunchy hookups ("Get It Daddy") and her restless legs ("Love Blood"). If lines like "And this lust was built in/Straight into my bones" imply extracurricular interests that keep her parents up nights, the band's musical know-how would do its elders proud.

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“Youth Knows No Pain”

“Like on 'Youth Knows No Pain' — we are the ones that should demonstrate, because we can take it,” Likke Li said. “We can pierce ourselves, take Ecstasy, dance all night and still go to work at our McDonald's jobs.” Despite the hedonistic sentiment in the song, the Swedish singer also admitted in hindsight her youth had repercussions. “I remember when I was 18-19 and feeling that I know it all,” Li said. “I always feel that I know it all. But that song is about realizing you don’t, and reflecting, ‘Boy, if I only knew what would follow.’”