If you’re looking for a way to keep cool and hear some great music this evening, head on down to the Arlene Schnitzer Concert Hall to see the Oregon Bach Festival presenting Mendelssohn’s Elijah tonight at 7:30 p.m. Highlights? The phenomenal OBF chorus, and two exceptional singers: baritone Thomas Quasthoff, and alto Roxanna Constantinescu. And, of course, the great OBF orchestra, under the able direction of artistic director Helmut Rilling. Oh, and get 50% off tickets for the Portland performance – order here.