Bring a picnic and a blanket and enjoy the Chamber Music Society of North Jersey playing under the historic Olmsted Oak in Anderson Park. FREE. Sponsored by Friends of Anderson Park and the Essex County Department of Parks, Recreation and Cultural Affairs. With additional support from the Bravitas Group/Silver Family Foundation and Investors Bank. (Raindate, June 10, same time.) (Check the Friends of Anderson Park Facebook page for weather updates.) (973) 477-7207