11 record labels have sued porn websites from RK Netmedia and RealityKings for using their music as a soundtrack for porn videos, according to a report in XBiz Newswire. They're claiming copyright infringement and seeking damages in a Los Angeles U.S. District Court for “infringement of the most blatant and offensive kind.”

Songs include the obvious choice of Kate Perry's "I Kissed a Girl," "Sexy Back" from Justin Timberlake and "Don't Stop (Til You Get Enough)" from Michael Jackson.

Elektra, Atlantic, Warner Brothers and 8 other labels are seeking $150,000 for each copyright infringement (song) used in the porn videos. The suit contains 18 pages of copyright infringement claims, with over 500 individual uses.

The suit claims that “Defendants simply stole these sound recordings and music compositions, synchronizing plaintiff’s works more than 500 times onto the soundtrack of their pornographic videos without license of consent from the plaintiffs.”

500 times $150,000 is a cool $75 million, unless the suit is for a maximum of $150,000 per song. No word yet from the defendants on their reaction.

And you thought Joel Tenenbaum was in a bad spot.