A former Motown singer says her voice was used to enhance Paula Abdul's on the hit album "Forever Your Girl."

Yvette Marine is suing Virgin Records for unspecified royalties and credit for the performance. She said she was never paid or acknowledged.Marine's lawsuit, filed Monday in Los Angeles Superior Court, claims her voice was mixed with Abdul's on the songs "Opposites Attract" and "I Need You." "Forever Your Girl" has sold 7 million copies since its 1988 release.

"At that time, Paula Abdul was an inexperienced singer," said Steven Ames Brown, Marine's attorney. "Obviously, they wanted someone there to help Paula."

Virgin Records, in a statement, called the allegations "opportunistic, bad-faith litigation" filed in a "quest for fame." Marine performed background vocals only and received appropriate credit, the company said.