PORTLAND — Grateful Dead guitarist and co-vocalist Bob Weir will be playing a concert in Portland next May.

Weir is scheduled to do a solo and acoustic show May 1 at the State Theatre, 609 Congress St., Portland. Tickets for the 8 p.m. show go on sale at noon Friday and will be available in person at the Cumberland County Civic Center box office, by phone at (800) 745-3000, or at www.statetheatreportland.com. Tickets are $40 in advance, $45 on show day. The show is all ages, general admission.

Weir played Portland in November with the band Furthur, and has played the city several time with the band Ratdog.