The singer says organiser 'asked me to do the festival next year a few weeks ago'
Giddings said the music business doesn’t invest to "build" a band enough, leading to lack of headline-quality acts
Nicki Minaj will host annual ceremony on November 9
See the list of 2014's Top 10 biggest selling albums
The singer played 'The A Team' for the Tory Prime Minister
Jessie J, Deadau5, Mary J Blige, Tony Bennett and more also added to bill today (August 26)
Eric Clapton and Tom Petty secure high new entries as Magic hit Number One in Singles Chart
"People need to use their words carefully when they announce these lists," says Example
Wiley critical of 'backwards' list and claims black artists are getting 'bumped'
It is the first time two British solo artists have topped the Billboard Chart since 1993