Disco-Tex and the Sex-O-Lettes were a disco group of the 1970s headed by Sir Monti Rock III (born Joseph Montanez Jr., 29 May 1942, Bronx, New York).


Formed by Bob Crewe and Sir Monti Rock III (who was a teen idol/talk show regular of the 1960s), their albums included a self-titled release and Manhattan Millionaire (future dance singer, Jocelyn Brown, supplied backup vocals for the group for some time).

Their biggest hits were 1975's "Get Dancin'" and "I Wanna Dance Wit' Choo (Doo Dat Dance)". "Get Dancin'" is featured on The Simpsons episodes "Bart vs. Thanksgiving" and "I'm Goin' to Praiseland" (both times performed by fictional group 'Hooray for Everything'). The group had a large gay following, mainly due to the overtly camp image of Monti Rock.

The group was name-checked by Elvis Costello in the song "Invasion Hit Parade" from his 1991 release Mighty Like a Rose with the "King of the Road"-alike lyric "No pool, no pets, no cigarettes - Just non-stop Disco Tex and the Sex-O-Lettes".

The group was also name-checked by the Pet Shop Boys on their song "Electricity" from their 1996 release Bilingual with the lyric "It's the greatest show with the best effects, since Disco Tex and the Sex-O-Lettes".