Perry told the listening party that this track was a deliberate homage to Mariah Carey’s debut album, as well as the work of ’80s funk duo Wendy & Lisa. The result is a club-ready party jam with ’90s-style synths and a heavy 4/4 thump. As you might expect, Perry has fun with all the double-entendres the subject has to offer—by the end, she’s whispering “Happy birthday” like a perfect Marilyn.
