There's a few songs I can truly say that I learned from the singing of .... me.

I found them in a book, or on the net. Worked out the tune, then sang it into my minidisk using a printout of the words. Then burned it onto a CD with other songs I wanted to learn.

Then I learned the words of the song from listening to the CD of me singing it. There's at least two of them I've never heard by anyone else, live or recorded.