All three festivals were set to take place in Louisville, Kentucky, in September.
George Clinton, Mary J. Blige, and Icona Pop also contribute to the 20-song soundtrack.
Two new tribute albums arrive today, one featuring pop and rock oriented artists, the other consists of country-style covers.
Revamp, one of two new Elton John tribute LPs, also features contributions from Coldplay, The Killers, Mumford and Sons, Pink, and Sam Smith.
Not even The Roots and Mike McCready could save this one.
Gregg Allman, Mavis Staples & Ray LaMontagne also on the bill.
Springsteen, Arcade Fire, Wilco, and more.