Do you remember this kid's show? Very vague memory, sorry...?

I remember at the end of this show, they would put up the address to write to. I think it was a P.O. box, and a child's voice would read the address out loud. But right before that they would play this calming sort of music, possibly with a flute, and show a little montage of images on the screen. One of the pictures was a lit-up city skyline. There may also have been a tree or some flowers. Sorry it's so vague, but it's just one of those cloudy, ancient memories that drives you crazy. This would have been in the 80's, quite possibly PBS. Thanks for any help you can provide.
Do you remember this kid's show? Very vague memory, sorry...?
Zoom possibly? I know that show was around in the 80's and then resurfaced in the late 90's-early 00's. "Send it to Zoom, P.O. Box ???, Boston, MA"
Reply:sounds like Zoom to me