With the Olympics about to begin Friday, two classical radio stations have announced special programming to mark the occasion. One is Boston’s WGBH, which has already kicked off its World of Classical Music Challenge on Aug. 1. The station is asking listeners to help create “the dream team of classical music” by submitting their favorite pieces of music from the world’s five regions as represented by the Olympic Rings: Europe, Africa, Asia, Oceania and the Americas. Submissions will be accepted until Aug. 24.
