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...little firefly shining so brightly outside my window. Where do you go in the ...

This was on a lullaby cassette I was given for my daughter's birth in 1995. This was my favorite song on it and I would sing it to her often. The cassette has been long lost and I want to find the rest of the words to write down for her before I am no longer able to remember any of it at all. I have searched and searched on the internet for it with no luck. Thank you for your help.