It’s not just a big weekend for pumpkin carving and candy buying (and sampling). Several orchestral concerts are going on around the region, all featuring special guests of a wide variety of ages and expertise, and all costing $20 or less.
—Northwest Symphony Orchestra opens its 2012-13 season tonight (Friday, Oct. 26) at 7:30 p.m. at Highline Peforming Arts Center, with guest trumpeter Natalie Dungey, age 12, as soloist on Mateo Messina’s “Calling the Cavalry.” Tickets: $10-$14.
–Ludovic Morlot and the Seattle Symphony put on a “Discover Music” concert for families at 11 a.m. Saturday at Benaroya Hall. Ten-year-old Nathan Lee is guest pianist, and he’ll perform the allegro from Mozart’s Piano Concerto No. 27 in B-flat Major. Tickets: $15-$20.
–Kim Roy, conductor of Seattle Rock Orchestra, joins Seattle Metropolitan Orchestra as associate conductor at 8 p.m. Saturday at Langston Hughes Performing Arts Center. Also appearing: Denise Dillenbeck, Tacoma Symphony’s associate concertmaster. Tickets: $10-$15.
–Cellist Julian Schwarz, a name you may know, joins Sammamish Symphony Orchestra in performing at 2 p.m. Sunday at Eastlake Performing Arts Center. Tickets: $11-$16.