Blossom Festival: Williams, Navarro and Gershwin

The Cleveland Orchestra’s Sunday evening concert at the Blossom Music Center seemed like a mishmash on the printed page, but it turned out to be a perfect summer evening: an all-American program with great tunes (selections from Gershwin’s Porgy and Bess featuring three excellent soloists and the Blossom Festival Chorus), not too intellectually challenging (a fanfare by John Williams and excerpts