In 1999, Whitney Houston sang Vandross's "So Amazing" as a tribute to Vandross as he sat in the audience during the Soul Train Awards. Johnny Gill, El DeBarge, and Kenny Lattimore provided background vocals. On July 27, 2004, GRP Records released a smooth jazz various artists tribute album, "Forever, for Always, for Luther", including ten popular songs written by Vandross. The album featured vocal arrangements by Luther, and was produced by Rex Rideout and Bud Harner. Rideout had co-authored songs, contributed arrangements and played keyboards on Vandross's final three albums. The tribute album was mixed by Ray Bardani, who recorded and mixed most of Luther's music over the years. It featured an ensemble of smooth jazz performers, many of whom had previously worked with Vandross.