Concerts
The Black Keys, 8 p.m. Moda Center at the Rose Quarter, 1 Center Court, Portland; $35 to $65 through Ticketmaster, 800-745-3000 or www.ticketmaster.com; 877-789-7673 or www.rosequarter.com
Classical Mandolin Society, 7:30 p.m. Oct. 31 and Nov. 1. Free concerts for the public as part of the 29th annual mandolin convention. Red Lion Jantzen Beach, 909 N. Hayden Island Drive, Portland; free. 360-521-0255 or www.classicalmandolinsociety.org
Con Bro Chill, 9 p.m. Wonder Ballroom, 128 N.E. Russell St., Portland; $13 to $15 through Ticketfly, 877-435-9849 or www.ticketfly.com; 503-284-8686 or www.wonderballroom.com
Elephant Revival, 9 p.m. Oct. 31 and Nov. 1. Aladdin Theater, 3017 S.E. Milwaukie Ave., Portland; $15 to $18 through Ticketfly, 877-435-9849 or www.ticketfly.com; www.aladdin-theater.com