Music Director Carl St. Clair led the Pacific Symphony tonight in an exciting concert at the McCallum Theatre. It began with an energetic rendition of Beethoven’s Egmont Overture and concluded with the great composer’s uplifting Symphony No. 7. In between, celebrated French pianist Jean-Yves Thibaudet delivered a virtuosic performance of Camille Saint-Saëns’ exotic Piano Concerto No. 5, “Egyptian.”