"I Kissed a Girl" is the debut single by American singer Katy Perry. It was released on April 28, 2008, by Capitol Records as the lead single from her second studio album, One of the Boys (2008). Perry co-wrote the song with Max Martin, Cathy Dennis, and its producer Dr. Luke, with additional production from Benny Blanco. "I Kissed a Girl" is a pop-rock, electropop and new wave song with elements of disco and glam rock. Perry stated its lyrics are "about the magical beauty of a woman". The song sparked controversy for its handling of bi-curious themes, but in retrospect has been credited with increasing LGBT awareness in pop music.

The song topped the US Billboard Hot 100 chart for seven consecutive weeks, becoming the 1,000th number-one song of the rock era. The single has sold 4.8 million units in the US alone. "I Kissed a Girl" is one of eight songs by Perry to sell over 4 million digital copies in the US, the others being "Hot n Cold", "California Gurls", "Teenage Dream", "Firework", "E.T.", "Dark Horse" and "Roar". It also topped the charts in Australia, Austria, Belgium, Canada, the Czech Republic, Denmark, Germany, Hungary, Ireland, Italy, New Zealand, Norway, Scotland, Sweden, Switzerland, and the United Kingdom. It was the best-selling song of 2008 in Finland. The song has been certified multi-platinum in Australia, Canada, Denmark, the UK, and the US.

I Kissed a Girl

An accompanying music video for the song was released on May 16, 2008. The video, directed by Kinga Burza, features the singer in a setting inspired by burlesque and Moulin Rouge styles. It features appearances from Perry's friends, including actress Shannon Woodward and singer Kesha. The song is recognized as the 10th best-selling single in the 21st century. "I Kissed a Girl" was performed and a nominee at the 51st Grammy Awards (Grammy Award for Best Female Pop Vocal Performance). It was also nominated for Favorite Song at the 2009 Kids' Choice Awards. The song has been performed on all of her tours. It was also included in Perry's performance in Super Bowl XLIX's Pepsi Halftime Show in 2015.

I Kissed a Girl

Background

According to Perry, "the chorus actually popped into my head when I woke up". Perry also said that it somewhat was from personal experience. "It was one of those moments where you hear artists talking about songs they get in dreams or in the middle of the night. I was like 'wow, what an interesting subject matter to kind of pop into the head' and I didn't do anything with it for about a year-and-a-half. Then all of a sudden at the very, very end of making my album, I literally had two days left in the recording studio with my producer, Dr Luke. We just said, 'we're gonna finish it—it's so catchy because it won't get out of our heads.'"

I Kissed a Girl

Capitol A&R Chris Anokute told HitQuarters that the song and its controversial theme met with strong resistance at the label. "People said, 'This is never going to get played on the radio. How do we sell this? How's this going to be played in the Bible Belt?'" Anokute said that they needed the support of one of the label's radio promoters to convince people to believe in the record. Otherwise, Perry would have likely been dropped again. Dennis Reese, Capitol's senior vice president of promotions, saw the vision and helped push the single on national radio. The first station to pick it up and take a chance was 107.5 The River in Nashville. Rich Davis, then PD, was played the song by Joe Rainey of Capitol Records outside his favorite sushi spot in Nashville and immediately put it on the air. After playing it for three days, they were inundated with enthusiastic calls.

Composition

"I Kissed a Girl" has a length of three minutes. The song is a pop rock, new wave, and electropop, track which runs through a throbbing beat and an organic instrumental thump, according to About.com's Bill Lamb. It features instrumentation provided by drums, guitars, and bass, courtesy of Dr. Luke. The song was produced by Dr. Luke, which was coordinated by Gary 'G' Silver and aided by American producer and songwriter Benny Blanco. There were a number of personnel who engineered the track for the album, including Emily Wright, Sam Holland, Nick Banns, Aniela Gottwald, Mike Caffrey, and Tina Kennedy. Kitty Purty assisted in the engineering while Tim Roberts assisted in the engineering for mix, which was done by John Hanes. The song was mixed by Serban Ghenea at his studio MixStar Studios in Virginia Beach, Virginia. Cathy Dennis was on background vocals while Dr. Luke and Benny Blanco were featured on drums and programming. Steven Wolf provided the live drums on the song while Mike Caffrey recorded and produced the drums at Monster Island in New York City.