Unreleased duets beloved R&B star Luther Vandross recorded with Beyonce Knowles and Frank Sinatra are to feature in a new box set of the late star's hits.

The comprehensive new four-CD collection, Love, Luther, features the soul man's greatest hits, rare recordings and unreleased tracks.

As well as duets with Knowles and Sinatra, collaborations with Dionne Warwick, Mariah Carey and Janet Jackson will also appear in the box set for the first time.

Vandross lost his life in 2005 following a stroke. The new album is released in October.

- Luther Vandross Gallery

(This news article provided by World Entertainment News Network)