"Freecreditreport.com Renaissance Fair Song Commercial" (2009) Lost Media

This company had a big series of annoying ads with the jingle. You'd get a free credit report and then it would sign you up for some monthly charge. Use annualcreditreport.com to get your actual free credit report. Get a paper copy if you can, it has way more information.

Here's an older free credit report commercial before the annoying jingle. Waaaay more subdued:
https://youtu.be/3wW6fysSBV0

That got sued for being too scammy:
https://www.ftc.gov/news-events/news/press-releases/2005/08/marketer-free-credit-reports-settles-ftc-charges-0

November 2009.