The first Rap-Rock song was “The Body Rock” by The Treacherous Three.
In 1980, The Treacherous Three, which consisted of DJ Easy Lee, Kool Moe Dee, L.A. Sunshine, Special K, and Spoonie Gee (who left the group in the late 1970s), released their single “The Body Rock” (also known as Body Rock) which became the first Hip-Hop/Rap-Rock song. The single was released via Enjoy Records and off their 1984 self-titled debut album The Treacherous Three.
“Rock, the body body, rock, the body body
Rock, the body body, rock, the body body”
The first prominent Rap-Rock song was “Rock Box” by Run-D.M.C.
Run-DMC's “Rock Box” was the first prominent Rap-Rock Song. Run-D.M.C. released their single Rock Box in 1984.