Usher, Alicia Keys, Beyonce, Mary J. Blige are among the gaggle of artists schedule to honor the great Luther Vandross in song on an upcoming  tribute set called "So Amazing: An All-Star Tribute To Luther Vandross."

The album, due September 20 via J Records, comes in the wake of the singer's stroke induced demise in July.

"No one had ever heard of anyone that sounded like Luther," said Blige, who covers the Vandross classic "Never Too Much." "No one heard anyone that brought that much soul."

In a surprising move, ex-fugee Wyclef Jean is slated top render one of Vandross' best loved classics, "Always and Forever."

Meanwhile, Keys will be joined by Jermaine Paul on "If This World Was Mine," and Celine Dion will cover Vandross' last major single "Dance With My Father," the title track of the former No. 1 album released shortly after he suffered the stroke.

The set also features Vandross' fellow icons Aretha Franklin, taking on "A House Is Not A Home," and Patti LaBelle on "Here and Now."

Others performers include Jamie Foxx ("Creepin"), Donna Summer ("Power of Love"), Fantasia ("Till My Baby Comes Home"), John Legend ("Love Won’t Let Me Wait") and Babyface ("If Only For One Night").

"Luther Vandross’ music influences generations of past, present and future by helping us understand the language of love," added Usher, who covers "Superstar." "His legacy will live on forever and I’m happy that I could contribute to his legacy."