Katy says the song was based on a real experience she had with a guy who could one day seem interested in her, then seem unconcerned on another. The singer finds this behavior very annoying and struggles to trust him. Perry also performed the song on the Hello Katy Tour, California Dreams Tour, Prismatic World Tour and Witness: The Tour. In Hot N Cold, Katy Perry speaks about a guy who is extremely indecisive, thus unable to have a steady relationship with her. 'Hot n Cold' was nominated for the Grammy Award for Best Female Pop Vocal Performance at the 52nd Annual Grammy Awards. The song's music video, which was directed by Alan Ferguson, was released on October 1, 2008, and features Perry as a bride who is about to get married to her fiancé, who experiences a daydream in which she pursues him after he flees from the wedding. Yeah, you, PMS Like a bitch I would know And you over think Always speak. She also performed the song at the 2008 MTV Europe Music Awards, which she hosted. Hot and Cold Hot N Cold You change your mind Like a girl changes clothes. To promote 'Hot n Cold', Perry marked the song's live debut with a performance on NBC's Today. To date, 'Hot n Cold' has sold over 5.7 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 three single, following 'I Kissed a Girl'.

The lyrics address an unstable romantic relationship caused by a partner's mood swings. The track was released as the album's second single on September 9, 2008. Luke and Benny Blanco for her second studio album, One of the Boys (2008).

'Hot n Cold' is a song by American singer Katy Perry.

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