The singer was in the crowd for the show at Hollywood’s W Hotel
The singer had previously joined Facebook earlier this year
The comments were made during the producer's Face The Music keynote speech
The Purple One played four recently-released tracks
Chris Rock will serve as the show's host on November 1
Duo performed the Prince rarity 'What's My Name'
The question referred to the optimum sound frequency to tune music
'Plectrumelectrum' and 'Art Official Age' are both available to purchase physically and via download from today
New track taken from forthcoming solo album 'Art Official Age'
Solo track 'U KNOW' and ‘Plectrumelectrum'’s 'WHITECAPS' available to hear now
The song features on his 34th LP 'Art Official Age' – which is out September 29
'Art Official Age' and 'Plectrum Electrum' will both drop on September 29
Rumours suggest US singer could still make an appearance at Worthy Farm bash
New track titles include 'The Gold Standard' and 'This Could Be Us'
Singer tells Roundhouse crowd: "Something is going on in here. I don't know about you but I can feel it"
He will be joined by 3rdEyeGirl for the last minute gigs later this week
'Hit & Run' tour to visit France, Germany and Austria in June
US singer brings 3rd Eye Girl back to the UK for his first gig in the city since 1995
Singer says: “We need to treat all people like royalty”
Iconic performer will hit Birmingham, Manchester, Glasgow and Leeds