A few years ago I found this pair of signs on Sutphin and Archer, a block south of the LIRR Jamaica station. I haven’t walked south on Sutphin Boulevard (perhaps I should) and haven’t found similar signs elsewhere in town.
The piano keys, I’d guess, are in honor of southern Queens’ (especially the Addisleigh neighborhood) claim to fame as being home to quite a number of jazz luminaries. The nearby Chapel of the Sisters, in Prospect Cemetery, was recently rebuilt as the Illinois Jacquet Performance Space; Jacquet lived in southern Queens. [ForgottenTour #51 in April 2012 paid a visit]
Queens Jazz Trail Map, Tony Millionaire, Ephemera Press