"TK421" is a song by American singer Lenny Kravitz, from his upcoming twelfth studio album Blue Electric Light. The song was released as the album's lead single on 13 October 2023.
Background
The title of the song refers to the science fiction franchise Star Wars, in which TK421 refers to the identification number of the stormtrooper who received the task of inspecting the Millennium Falcon imprisoned in the Death Star.
Video
The song's music video, directed by Tanu Muino, was released together with the single.
Reception
Mark Seliger of Rolling Stone wrote, "Lenny Kravitz is butt naked and loving life in the music video for his new single... “TK421” is a Prince-esque blast of uproarious funk rock, with Kravitz pinning his sights on pure uncut ecstasy."