Courts have shown reluctance to curtail creative uses of trademarks in expressive works. For example, in "Mattel v. MCA Records", United States Court of Appeals for the Ninth Circuit permitted the band Aqua’s use of Mattel’s trademark in "Barbie" to sell songs, that MCA had a valid parody defense, as Aqua needed to use the word "Barbie" in its song "Barbie Girl," based on the fact that the use of the mark was (1) artistically relevant to the song and (2) not explicitly misleading as to the source of the song. Because there was a relatively small likelihood of confusion, the Ninth Circuit held that the First Amendment protected Aqua's use of the mark. The First Amendment defense has not stood up where the trademark holder was able to prove the existence of significant actual confusion. An example of this is a parodic publication running a parody ad for a product, and the parody not being well done enough or labeled clearly enough for people to realize it is not a real ad.