Kryptonite is a track by American rapper Ken Carson, a key figure in Playboi Carti's Opium label and the distorted rage sound that grew out of underground SoundCloud rap. His music is built on hazy synths and layered, pitched vocal ad-libs, which is why isolated stems like this one circulate widely among editors. Short vocal rips from his songs became popular ingredients for TikTok edits and YouTube rage compilations, where producers chop the airy backing vocals into transitions and intros rather than using full verses.