The The Who song used as the theme for the TV show CSI: Crime Scene Investigation is “Who Are You.” The song opens the original series, which premiered in 2000, with its instantly recognizable chorus accompanying the forensic drama’s title sequence.
Released in 1978, “Who Are You” was written by guitarist and primary songwriter Pete Townshend, with lead vocals by Roger Daltrey. It was the title track of The Who’s eighth studio album, also called Who Are You, and became one of the band’s most recognizable late-1970s songs.
A common mix-up is “Won’t Get Fooled Again,” another major The Who song associated with television. It served as the theme for CSI: Miami, while “Baba O’Riley” was used for CSI: NY. Those related series helped make several different Who songs familiar to TV audiences, but the original CSI theme is “Who Are You.”