In the growing fight of musician versus politician, another artist has added a cease and desist letter to Michele Bachmann's mailbox. 

Add Katrina & The Waves to growing list of artists who want Congresswoman and Presidential candidate Michele Bachmann to stop using their music.

It all began after Tom Petty caught wind of her using his hit, "American Girl" earlier this week, even after his lawyers asked her to knock it off. Tuesday at a rally in South Carolina, 29 seconds of "American Girl" played before being abruptly cut short and replaced with Katrina & The Waves' 1985 jam "Walking on Sunshine".

Now, the group has issued a statement on their website that says, "Katrina & The Waves would like it to be known that they do not endorse the use of 'Walking On Sunshine' by Michele Bachmann and have instructed their lawyers accordingly."

Both Petty and Bachmann have not commented about the dispute, but Katrina Leskanich made a statement to Rolling Stone Magazine that basically says she has performed that song so many times in her life that it is the "one constant" in her life and "the one thing" that she can count on to "bring happiness to myself and others." She believes that the song is used to capture "feel good" moments and is a great song for "empowerment", but says if she disagrees with the "policies, opinions or platforms for its use" she says she has "no choice" but to "try and defend the song and prevent its misuse."

This now leaves Bachmann searching for another song to use at her rallies. Any bright ideas?