Under the direction of conductor Osmo Vänskä, the Cleveland Orchestra plays Mendelssohn's Symphony No. 4 (“Italian”) and Barber's Symphony in One Movement tonight at 7 at Severance Hall. Arrive early for specially-priced happy hour food and drinks and then stick around after the concert for some "leisurely conversation" on Severance Hall’s scenic outdoor terrace. Consult the orchestra website for ticket prices. (Niesel)