105.9 is nice but is strictly real McCoy Classical. Id love a station that plays more curent tunes, Broadway tunes, or old popular tunes, but with no vocals.
I googled the words, all instrumental radio new york, and there are a lot of links for online radio. I am not sure if any of them can be picked up in the car or on your radio, though. Maybe they can.
Best best is a data phone, install pandora, plug it into the data jack in your car stereo. If you have an older car, use a device to allow your phone to output to your stereo (cassette, broadcast device.