Kerson Leong, a violinist who speaks “with sincerity and without exaggeration” (The Strad), performs Beethoven’s beloved Violin Concerto; Beethoven changed the genre with this innovative and lyrical concerto, which leaves ample space for the violinist to dazzle. The MSO welcomes leading Baroque expert Bernard Labadie to conduct one of the era’s finest gems: Haydn’s rambunctious “Drumroll” Symphony.