“Gilbert led a thoughtful if not particularly seductive account of Debussy’s overtly sensual ballet “Jeux.” Far more persuasive was Sibelius’s darkly brooding tone poem “En Saga,” given a wonderfully characterful performance to open the night. One Finnish writer called this music “as simple as a folk song, as gloomy as the forest primeval.” Gilbert shaped those long Sibelian paragraphs of orchestral sound with a lidded intensity, and the orchestra played superbly for him. In the tone poem’s final moments, William Hudgins held the entire hall with a lone, dusky clarinet solo. You could almost hear the icy wind blowing behind the notes.”