Somerville’s hopping on Friday night. Precursors of alt-country, blended in LA’s Paisley Underground, the Long Ryders made their mark in the ’80s, but ride again with an appearance at the Once Ballroom. And over in Union Square, Thunder Road serves a hot ticket for jam-band fans with a practical all-star edition of conductor Matt Butler’s Everyone Orchestra, featuring two members from the Disco Biscuits and from moe., as well as guitar great Steve Kimock. However, Friday also sports a big show at the Brighton Music Hall with honky-tonk singer Margo Price, who I profiled this summer.

Another country upstart surfaces on Saturday when California singer Cam rolls into the Paradise Rock Club, while dreamy electro-pop singer and YouTube star Troye Sivan charms just around the corner at the Agganis Arena. And the award-winning Pedrito Martinez Group (pictured), formerly a favorite at Johnny D’s Uptown, brings its sizzling Cuban dance music to the South End’s suitable Villa Victoria Center for the Arts, a concert presented by World Music/CRASHarts. Finally, on Sunday, U.K. art-rockers Wild Beasts grace the Middle East Downstairs on a smart double bill with the experimental indie-rock of Porcelain Raft.

Tip ahead: My Morning Jacket frontman Jim James stretches out with his solo band at Royale next Tuesday and Wednesday behind his new psychedelic-soul outing Eternally Even.