Isaac Hayes - theme from shaft, 1971

"Theme from Shaft", written and recorded by Isaac Hayes in 1971, is the soul and funk-styled theme song to the Metro-Goldwyn-Mayer film Shaft. The theme was released as a single (shortened and edited from the longer album version) two months after the movie's soundtrack by Stax Records' Enterprise label. "Theme from Shaft" went to number two on the Billboard Soul Singles chart (behind "Inner City Blues (Make Me Wanna Holler)" by Marvin Gaye) and to number one on the Billboard Hot 100 in the United States in November 1971, and number one in Canada in December. The song was also well received by adult audiences, reaching number six on Billboard's Easy Listening chart and number four in Canada. The song is considered by some to be one of the first disco songs."