The non-profit group Sing for Hope got a hold of 60 pianos and then dropped them off around the city, with instructions.
"Play me, I'm yours."
The pianos dot the city from Lincoln Center to Prospect Park in Brooklyn. Queens, the Bronx and Staten island have them too.
The group had 15 artists, such as Sophie Matisse, to "brush up" on their instruments.
And yes, Matisse is related to that Matisse. Her great-grandfather Henri painted "The Piano Lesson" in 1916.
She just painted the piano.
"I wanted to attract as much attention as possible to them," she told CBS News correspondent Jim Axelrod.
Around the city, New Yorkers are being reminded of the power of music.
"I've seen New Yorkers do double takes," said Camille Zamora. "All it took a painted piano that said 'play me I'm yours.'"
Residents will just have to turn down their iPods to hear.