For R&B/funk singer Isaac Hayes, adapting his 1971 song "Good Love" for the soundtrack to the animated movie "South Park: Bigger, Longer & Uncut" wasn't too much of a stretch.

After all, the original song includes the chorus "Good love — 6-9-9-6-9," a phrase that fans of the hit cable TV series "South Park" can easily imagine coming from Chef, the ladies' man character whose voice Hayes provides.

"Well of course Chef would say that — he's perverse," Hayes said from New York on Wednesday. "Chef wants to be a lover — always wanted to be. That's the way he perceives himself, and this tune is a great vehicle for him to [project] that image."

Most of the album's tracks are sung by characters from the "South Park" gang, including Chef, Stan, Kyle, Cartman and Kenny.

To drive home how appropriate the lyrics are for Chef, Hayes quoted from the opening lines: "I'm bona fide, solidified and qualified to do/ Anything your heart can stand/ It all depends on you/ I turn your world upside down/ I'll blow your mind to pieces/ You'll recommend me to your momma, your sister, your aunts and your nieces."

"C'mon now, that's Chef," concluded Hayes, who turns 61 on Friday.

Hayes, who scored a smash hit in 1971 with "Theme From Shaft," said he laughs out loud when he listens to the soundtrack, which hit stores June 22 and currently holds the #58 spot on the Billboard 200 albums chart. "You can't help it, man," he said. "If it's funny, it's funny."

In addition to Hayes, the "South Park: Bigger, Longer & Uncut" soundtrack features several guest performers who offer an interesting mix of "South Park" interpretations: Geddy Lee and Alex Lifeson of the veteran rock band Rush hand over "O Canada," while acoustic rockers the Violent Femmes perform the campy "I Swear (I Can Change)" and rapper Kid Rock provides some rhymes on "Kyle's Mom's a Big Fat Bitch."

With such additional titles as Trick Daddy's "Shut Yo Face (Uncle F**KA)" (RealAudio excerpt) and the single "What Would Brian Boitano Do?"

(RealAudio excerpt) — whose title refers to the 1988 Olympic champion figure skater — the album carries on the tradition of poor taste and toilet humor that has made the TV show a hit.

The album's predecessor, last year's million-selling Chef Aid: The South Park Album, featured songs from metal legend Ozzy Osbourne, rap kingpin Master P, pop superstar Elton John and new-wave synth pioneers Devo. It also spawned a hit with Hayes' "Chocolate Salty Balls (P.S. I Love You)."

"They know a winner when they see one," Hayes said, explaining why "South Park" projects continue to draw big-name talent. "Everybody has something in there that they like. There was a list of people who wanted to be just on a 'South Park' TV episode. They don't have any trouble trying to get people involved. Because when you find something that funny and that good, if you can, you want to be a part of it, just to say, 'Once I did a "South Park." ' "

In addition to the songs by guest artists, the album contains most of the musical numbers from the movie, which chronicles the misadventures of a young group of friends who live in a perpetual winter in Colorado.

Marc Shaiman, the Los Angeles composer who scored the movie, credited the show's creators and soundtrack producers, Trey Parker and Matt Stone, with writing catchy and funny songs in the classic musical tradition. "Trey is a real renaissance man," said Shaiman, who has also scored "The Addams Family" and "Sister Act 2." "Especially if it involves farting."

Hayes, who is working on his next album in addition to lending his voice to "South Park" episodes, said the soundtrack captures the essence of the movie. "It expresses what the characters express, whether it is good or bad, antisocial character or a social character," he said. "And they put it to music, but they did it in such a funny way."

(Staff Writer Teri vanHorn contributed to this report.)