Insane in the Brain was released by Cypress Hill in 1993 as a single from their second album, Black Sunday, and quickly became one of the group's signature songs. Its driving beat and memorable hook helped it cross over beyond hip-hop audiences, earning heavy radio play and a lasting place in nineties music culture. Over time, the track has stayed popular through throwback playlists, sports broadcasts, films and online edits, where its opening seconds are instantly recognised even by listeners who do not know the full song.