'Cat, yours is Puttin' On The Ritz. I think the original version goes back to the 1920s or 30s, but I also remember a pop version in the 80s by Taco. I think the 80s version did pretty well on the charts.
And, no, Moondance, by Van Morrison, is not correct. Sorry.
Maybe a few more lines would help:
Moon appears to shine and light the sky
With the help of some fireflies
I wonder how they have the power to shine, shine, shine
I can see them under the pine
But don't hesitate, 'cause your love won't wait