Kesha’s “TiK ToK” (2009) is a glitter-drenched electro-pop anthem that defined a generation’s party scene. With cheeky lyrics about brushing her teeth with Jack Daniels and not caring about what people think, Kesha’s sing-rap style and Dr. Luke’s bouncy production created an irresistibly fun vibe. “TiK ToK” spent 9 weeks at No. 1 on the Hot 100 and became the best-selling single globally in 2010, heralding a wave of carefree, synth-driven pop. Kesha’s rebellious, messy-fun persona in “TiK ToK” resonated widely, cementing the song as an era-defining hit that still instantly brings the party.