Representatives for the company behind American Idol have hit back at singer Phillip Phillips after he demanded a release from his contract, insisting they have "always acted" in his best interests.

The season 11 Idol champ has filed suit against 19 Entertainment bosses, claiming he feels "manipulated" after being tied in to recording, management and merchandising deals related to the Tv talent show.

He is asking a judge to waive his contractual obligations and grant him the freedom "to conduct my career in a way that I am comfortable with", but 19 Entertainment executives have vowed to fight him all the way.

A spokesperson for the media firm tells Tmz.com, "We have always acted in the best interest (sic) of Phillip. We will vigorously defend ourselves from any baseless claims to the contrary and from any attempt to interfere with our rights and relationships."