Jonathan Cohen conducts the Cleveland Orchestra tonight as it plays a program featuring the music of Handel, Haydn and Mozart at Severance Hall as part of Cleveland Orchestra's Summers@Severance program. Special happy hour pricing will be offered on liquid refreshments during the hour prior to the 7 p.m. concert. At 8:30, there will be an after-party on the Outdoor Terrace where DJ Brad Petty will spin soft house and electronica. Consult the orchestra's website for ticket info. (Niesel)