The new rock supergroup, Walking Papers — with Barrett Martin (Screaming Trees) and Jeff Angell (Post Stardom Depression) — will be joined by guests Duff McKagan (Guns N'Roses) and Mike McCready (Pearl Jam) at Slim's Last Chance Saloon Friday, Aug. 17.

Seattle has had a long history of rock supergroups, and the latest generating much buzz is Walking Papers, formed by drummer Barrett Martin (Screaming Trees), and guitarist and singer Jeff Angell (Post Stardom Depression). Their pedigree is upped by guests Duff McKagan (Guns N’ Roses, Loaded) and Mike McCready (Pearl Jam) who will play with them at a benefit for the Heroes Project at 6 p.m. Friday at Slim’s Last Chance Saloon, in Georgetown, 5606 First Ave. S., Seattle; $15 (206-762-7900 or www.slimslastchance.com); at 10 p.m. at the Crocodile, 2200 Second Ave., Seattle; $10 (206-441-4618 or http://thecrocodile.com); and at Linda’s Fest, 6-10 p.m. Saturday at Linda’s Tavern, 6707 E. Pine St., Seattle; free (206-325-1220 or www.lindastavern.com).

Charles R. Cross, special to The Seattle Times