<Tr> <Th_colspan="2"> Music video </Th> </Tr> <Tr> <Td_colspan="2"> "I Kissed a Girl" on YouTube </Td> </Tr> <P> "I Kissed a Girl" is a song recorded by American singer Katy Perry for her second studio album, One of the Boys (2008). It was released on April 28, 2008, by Capitol Records as the lead single from the record . Perry co-wrote the song with its producers Dr. Luke and Benny Blanco, with additional songwriting provided by Max Martin and Cathy Dennis . "I Kissed a Girl" is a pop rock song with elements of new wave . Perry stated its lyrics are "about the magical beauty of a woman". The song sparked controversy for its homosexual themes . </P> <P> The song topped the Billboard Hot 100 chart for seven consecutive weeks, becoming the 1,000 th number - one song of the rock era . The single has sold over 4.7 million digital copies 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", "Firework", "E.T.", "Teenage Dream", "Roar" and "Dark Horse". It has reached the summit of the charts in nearly twenty countries, including Australia, Canada, Ireland, and the United Kingdom, while peaking within the top five in other European countries such as Belgium, Finland, and France . The song has been certified multi-platinum in Australia, Canada, Denmark, and the US . </P>

Who sings the song i kissed a girl