Beginning with the Summer of Love back in 1967, singers have gone to great lengths to tap into the erotic experience, going as far as simulating orgasms on record -- sometimes eerily accurately. Valentine's Day is overrun by chocolate boxes and cheesy cards, yes, but it also holds the prospect of getting some -- so to help that along we've rounded up our favorite vocal renditions of the "Big O."

'Jungle Fever,' The Chakachas
Vocally, 'Jungle Fever' consists only of moans, sexy Spanish utterances and orgasms -- and really, really convincing ones at that. In fact, if this Belgian-spawned Latin jam doesn't get you in the mood, we're not sure what will. This 1972 Top 10 US hit is like a sonic '70s porno, and it's no surprise that director Paul Thomas Anderson used it to great effect in his adult-film-crew-as-family opus 'Boogie Nights.'

'Date With the Night,' Yeah Yeah Yeahs
Before she graced fashion mag covers and composed music for a kids' movie (albeit one by her venerable, creative-as-hell ex-boyfriend Spike Jonze), Karen O seemed like a damaged NYC sex kitten, the kind of girl who could drink you under the table and out-wild anybody onstage or off. In this song from the Yeah Yeah Yeahs' 2003 debut, 'Fever to Tell,' her moan morphs into a scream as she sings, "I'll set you/I'll set it off, off, off, ah-ahhhhhhh!"

'Je t'aime ... moi non plus,' Jane Birkin & Serge Gainsbourg
You needn't know a word of French to understand this duet, sung (or, rather, whispered seductively) by real-life couple Birkin and Gainsbourg