we're singing "Sidewalks of New York" in our latest concerts, and there's a verse that uses the line "up in 'G'". anybody got any idea what that means and where it comes from?

here's the third verse:

Things have changed since those times,
Some are up in "G,"
Others, they are wand'rers,
But they all feel just like me;

here's the url where I found this particular version:
http://www.kididdles.com/mouseum/s033.html
I found several sites with the lyrics, but this one didn't immediately begin playing the midi file...


formerly known as etaoin...