Here is a preview for the previously announced duet between Cliff Richard and Elvis Presley on the song "Blue Suede Shoes". The song is part of Cliff Richard's 101st album "Just... Fabulous Rock 'n' Roll" which will be released November 2016.
http://www.cliffrichard.org/fan-zone/#audio
(Source: Cliff Richard / FECC)
(Source: Cliff Richard / FECC)