Kesha and Yung Skeeter featured in the music video for this hit song, which has since also spawned a number of covers, remixes and parodies.
This song technically has two official original versions, but the more popular of the two is the one featuring a rap intro and verse by Kanye West.
This controversial song was also parodied by Bart Baker, who tore into the cultural misappropriation of Egyptian imagery in the music video.
This motivational song won Perry a 2011 VMA for Video of the Year, and was referenced in the 2014 movie "The Interview".
This song spent two weeks at number one on the Billboard charts, but not without controversy, including accusations of plagiarism by Dillon Francis.
This iconic song defined the childhoods and angst of many '90s kids, was nominated for a VMA, and spent two weeks at the top of the Billboard charts.
This award-winning song features Perry as a nerdy alter ego, Kathy Beth Terry in its music video, and also got an official remix from Missy Elliott.
This saucy track obliquely pays homage to Jay-Z's "Empire State of Mind", and spent six weeks at the top of the Billboard charts.
The music video for this song featured Diego Luna, who would later go on to play the role of Cassian Andor in Lucasfilm's "Rogue One" and "Andor".
This innuendo-filled song features multiple versions of Katy Perry herself in its music video, Saturday Night Live sketch style.