Kevin Costner has sued a music promoter, claiming the company reneged on a contract to back the actor's fledgling music career.

Costner, 52, filed the lawsuit Tuesday in California Superior Court. The suit accuses Mahee Worldwide Ventures Inc. of breach of contract and fraud. Costner is seeking damages of more than $8.5 million.

Costner is the lead singer in the Kevin Costner Band, for which he also writes songs. He also has a company, Kevin's Music LLC, that manages his musical activities.

The lawsuit claims Costner's company and the promoter entered into a two-year agreement in January that would allow the actor's band to perform in as many as five concerts each year. Mahee also would create and maintain a Web site marketing Costner's band, the lawsuit said.

But Mahee failed to hold up its end of the deal, according to the lawsuit.

"Defendants made numerous promises regarding their capabilities to promote Mr. Costner's music and (their) willingness to pay for the right to do so," the lawsuit stated. "Instead of following through on their promises, defendants continued to make false promises and ultimately disappeared ..."

An e-mail message left for Mahee was not immediately returned Thursday.

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