Kesha packed her performance with some of her greatest hits from the early 2010s, including “Blow,” “Timber,” “Backstabber,” and “Tik Tok,” on which she replaced the song’s opening lyric to “Wake up ...

Kesha? This is Ke$ha. The pop star celebrated Independence Day with her first single as a free woman — and under her own label imprint, Kesha Records. On Thursday ...