Portland bluesman Nathan James and his band The Rhythm Scrathers will perform at 9:30 p.m. Saturday, July 28, at Alex’s Plaza Restaurant and Bar, 35 N. Main St. The trio’s sound brings together 1920s acoustic blues, ‘50s uptown blues and ‘60s R&B. Expect to hear originals and some obscure covers with distinct rhythms created by James’ handmade washboard guitar. The cover is $5.