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She also performed the song at the 2008 MTV Europe Music Awards, which she hosted. To promote "Hot n Cold", Perry marked the song's live debut with a performance on NBC's Today.
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"Hot n Cold" has sold over 5.8 million copies in the US, making it one of Perry's highest-selling singles in the nation. It also became Perry's second top five single in the United Kingdom, Australia, Ireland and New Zealand, and topped the charts in Finland, Germany, Canada, Norway, Spain, and Denmark, among others. The song reached number three on the Billboard Hot 100, becoming Perry's second consecutive top five single, following " I Kissed a Girl". The lyrics address an unstable romantic relationship caused by a partner's mood swings. It was released as the album's second single on September 9, 2008.
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Luke, and Max Martin and produced by Luke and Benny Blanco for her second studio album, One of the Boys (2008).
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" Hot n Cold" is a song by American singer Katy Perry.
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