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"
Nirvana frontman included a snippet from one of Young's lyrics in farewell letter
Neil Young and Crazy Horse release their second album of the year, 'Psychedelic Pill', in October
The singer quit alcohol and marijuana for a 'different perspective'
His second album this year with Crazy Horse is out on October 29
Folk legend and his band have put their own spin on the UK national anthem
Rocker trademarks 'Ivanhoe' and 'Thanks For Listening' as possible names for MP3 alternative
Legendary rocker also says digital market is 'degrading our music'
'Horse Back' was released online over the weekend
A further album is also apparently in the works
Rock legend also talks up his love of Mumford & Sons and My Morning Jacket
Legendary singer-songwriter said writing memoirs fit him 'like a glove'
Singer's LincVolt car damaged in San Francisco blaze