The longest day of  the year is Tuesday, June 21—the summer solstice—when the sun stays up extra late to welcome the first day of summer.

The streets and parks will be full of music, more than any other day of the year. For the fifth year running, Make Music New York is celebrating with hundreds of free concerts in public spaces throughout the five boroughs of New York City.

It was the French who began the tradition of toasting the bright evening with music with their Fete de la Musique.  Now its call is answered with Make Music festivals in cities around the U.S.

Here below are just a few outdoor concerts in unsual spaces (Make Music New York-related or not)  that kick off the summer season. See the festival website for more events ranging from a sing-along Messiah in the Meatpacking District to instrument jams at Bethesda Fountain in Central Park. An  interactive work on the Manhattan Bridge uses a Theremin. You can even sign up for a slot at one of 88 pianos that will be stationed around the city.