Topic: database error

Hey, was about to click a link from a song book, and I got this message:

You have an error in your SQL syntax.  Check the manual that corresponds to your MySQL server version for the right syntax to use near '?url=<a href="" target="_blank"></a> AND file not found

It was taken from the song book: Round the Campfire by adjal, and the song was: American Pie Easy (Don Mclean)