Solid Sound aka “Wilco-palooza.” Say no more, if you’re a hardcore fan of the ’90s alt-rock band. Different iterations of Wilco headline every night, and the band curates the rest of the bill to create a kaleidoscopic vision of the extended Wilco multiverse. Big names this year include Billy Bragg, The Breeders and Gang of Four. There’s always a healthy contingent of rising and under-the-radar talent as well. Don’t miss Sharp Pins, Prewn and Living Hour. The icing on the cake is that the festival takes place on the campus of Mass MoCa at the foot of Mount Greylock, among the rolling greenery of the Berkshires. It’s paradise, and it’s hard to find a bed in paradise, so book early.