"Hot N Cold" is a song by American singer Katy Perry. It was released in 2008 as the second single from her second studio album, "One of the Boys."

"Hot N Cold" is an uptempo pop-rock track with catchy melodies and humorous lyrics. The song's playful and fun vibe, combined with Katy Perry's energetic vocals, contributed to its commercial success and popularity.

The song was written by Katy Perry, Dr. Luke, and Max Martin, with production by Dr. Luke and Benny Blanco. Dr. Luke and Max Martin are well-known producers and songwriters who have worked on numerous hit songs.

Lyrically, "Hot N Cold" humorously explores the complexities of a relationship and the mixed signals that can be given by one person. The lyrics describe a person whose behavior alternates between hot (showing affection) and cold (being distant), leaving the other person confused and frustrated.

Upon its release, "Hot N Cold" received positive reviews from music critics and became a commercial hit. The song peaked at number three on the Billboard Hot 100 chart in the United States and reached the top ten in several other countries.

The music video for "Hot N Cold" features Katy Perry as a bride on her wedding day, with her groom running away. The video follows her as she chases him through various settings, symbolizing the ups and downs of their relationship. The video's comedic elements and colorful visuals align with the song's playful theme.

"Hot N Cold" played a significant role in establishing Katy Perry as a prominent pop artist and further solidified her status as a hitmaker. It showcased her ability to craft catchy and relatable songs with wide appeal.

Overall, "Hot N Cold" remains one of Katy Perry's most recognizable and popular songs. Its catchy chorus and relatable lyrics have made it a favorite among fans of pop music, and it continues to be a staple in Katy Perry's discography.