Late singer's hits re-recorded by the Royal Philharmonic Orchestra for new album
An auction will be livestreamed from Graceland during August
The singer's former home and museum have bought the items back
The planes have been on display at Graceland since the mid-1980s
Presley's ex-wife says he 'had a lot of dignity and class'
Site to feature artefacts never before seen outside of Graceland
Ballad 'My Happiness' was sold to an undisclosed bidder at Graceland yesterday
The items will be sold in the States early this year
Elvis At The O2: The Exhibition Of His Life opens in December
"The King's Crown" was accidentally sent to Dundee by FedEx