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'
They will play four shows, including London's O2 Arena next June
The rocker made the comment about the U2 frontman during a Twitter Q&A
All-star line up in California also sees Jack White and Foster The People perform
The Canadian singer has unfinished business with his '60s band
Young says his high-resolution music service will "save the sound of music"