The singer will outline launch plans for iTunes rival during keynote speech at the US festival
The band cancelled a gig in the city in 2013 because of an injury
He will also release an album this year on Jack White's Third Man Records
'A Letter Home' was recorded on 'ancient electro mechanical technology'
It follows Young's two 2012 releases 'Americana' and 'Psychedelic Pill'
Album allegedly recorded at White's Third Man studio and will be out this spring
The singer-songwriter also got cross at people singing along at the Carnegie Hall show
The event will raise money for Flea's Silverlake Conservatory of Music
The band will no longer be appearing in Liverpool and London later this month
Frank 'Poncho' Sampedro says 'my gut tells me this is really the last tour'