"Denise" is a 1963 hit by the American doo wop group Randy & the Rainbows, "Denis" was a 1977 gender-swapping cover of the song by the Americannew wave band Blondie. The cover of the song helped the band break into the international market. It featured on the band's second studio album, Plastic Letters (1978), and was the second UK single release by Blondie on Chrysalis records.
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The initial Blondie version contained a verse with partly improvised lyrics in French by the group's vocalist Debbie Harry. Although Chrysalis insisted that the band re-record the song with a grammatically correct French translation, both the band and producer Richard Gottehrer preferred the first take. Harry stood her ground on the matter,and the version containing the "pidgin French" lyrics was released. The second, re-recorded version had its debut as a bonus track on EMI UK's 1994 re-issue of Plastic Letters.
"Denis" was released in February 1978 and reached number 2 in the UK and broke into the Top 20 in most European countries including number 1 in Netherlands. In the UK, the song was kept at number 2 for four weeks, first by Kate Bush's "Wuthering Heights" and then by Brian and Michael's "Matchstalk Men and Matchstalk Cats and Dogs". Just like "Rip Her to Shreds", the single was issued on both 7" and 12" formats in the UK, and both feature two B-sides, "Contact in Red Square" from Plastic Letters and "Kung-Fu Girls" from Blondie. "Denis" was the only single released in the US from Plastic Letters (with "I'm on E" as the B-side) though it never charted. In 1988, a remixed version of the track was issued as a single from the Blondie/Debbie Harry remix compilation Once More into the Bleach. This time the single reached number 50 in the UK.