 The donor song is by soul singer David Porter, who, alike Isaac Hayes, had reinterpreted and extended pop hits, and incidentally used Isaac's backing vocalists.David Porter's fourth album, "Victim of the Joke", a "rock/soul opera" released by Stax Records in 1971, is a cult classic, known for its cover version of jazz singer Sara Vaughn's "The Masquerade is Over," sometimes called "I'm Afraid the Masquerade is Over.