Tik Tok was Kesha's debut single, released in 2009 and later included on her album Animal, becoming one of the defining pop hits of the late 2000s. Its catchy, party-ready hook made it a natural fit for short-form video, and a short excerpt began circulating on TikTok as a trend sound for getting-ready clips, dance edits and throwback posts. Because the song is so widely recognised, even a few seconds instantly signals fun and nostalgia, keeping it in regular rotation long after its original chart run.