A federal judge has said a trial is needed to determine whether the hit song Blurred Lines copied elements of Marvin Gaye's music.
The ruling by US district judge John A Kronstadt said there is a genuine dispute about whether the song by Robin Thicke and Pharrell Williams copied elements of one of Gaye's songs.
The pair have been fighting with Gaye's children in court for more than a year. The song was one of 2012's biggest hits.
Thicke and Pharrell sought a ruling that Blurred Lines did not infringe on copyrights to Gaye's song Got To Give It Up.
The Gaye family also claims Thicke improperly used Gaye's After The Dance for his US number one hit Love After War.
The judge ruled a trial would be needed to decide that issue as well.