41 On Saturday, David Crosby brings his Sky Trails band to Tanglewood, plus great folk-country singer-songwriter Mary Chapin and the veteran Americana duo Chris Hillman with Herb Pedersen. But hearing those songs in Daltrey’s voice seems more like the real thing somehow.

The Who released several versions of “Tommy,” which Ken Russell neon-splashed in his over-the-top film and the Hellbenders explored in a bluegrass version that took SXSW by storm in 2015. They performed all of “Tommy,” then a three-song encore of later songs and a Daltrey solo-album number. Last week at Bethel Woods – where the Who played most of “Tommy” at Woodstock and where Crosby, Stills, Nash & Young played their second gig – Daltrey and band and a regional orchestra played a 24-song main set. The Who’s guitarist Pete Townshend, who wrote “Tommy” isn’t playing this tour, but Who touring musicians will accompany Daltrey: guitarists Simon Townshend and Frank Simes, keyboardist Loren Gold, bassist John Button and drummer Scott Devour, plus new violinist Kate Jacoby, borrowed from Joe Russo’s Almost Dead.

On Friday, the Who singer Roger Daltrey and members of the Who’s touring band plus the Boston Pops play “Tommy” at Tanglewood Saturday, David Crosby takes over then Sunday afternoon, Crosby’s sometime band mate Stephen Stills plays with Judy Collins, subject of “Suite.” In 1969, the year of Woodstock, the Who released “Tommy,” hailed as rock’s first opera, and Crosby, Stills & Nash released the lost-love lament “Suite: Judy Blue Eyes” on their self-named debut album.

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