Hot'n Cold

"Hot n' Cold" is a popular song by American singer Katy Perry, written by Perry herself and produced by Dr. Luke for her second studio album, "One of the Boys" released in 2008. The song was written in the key of G major and explores the theme of Katy Perry's frustrating love-hate relationship. It became a commercial success worldwide, peaking within the top ten in several countries including the United States, United Kingdom, and Australia. Interestingly, "Hot n' Cold" was initially written for another pop artist but was later given to Perry after she signed with Capitol Records. The melody of the song is upbeat and catchy, characterized by its playful pop-rock sound and infectious chorus.