NEW YORK, May 30, 2013 /PRNewswire/ -- Sing for Hope Pianos will return to the vibrant New York City streets this weekend.  Beginning June 1, for two weeks, 88 pianos will be available for everyone to enjoy in public spaces throughout New York City's five boroughs in support of the NYC-based non-profit Sing for Hope and its mission to provide "access to the arts for all." Sing for Hope Pianos is made possible through the generous support of Chobani, Inc., maker of America's No. 1 selling Greek Yogurt brand, and in collaboration with the City of New York.