Stars including Pharrell, the Eagles and Chris Cornell are part of a major legal assault on YouTube over the free screening of music videos.
Music mogul Irving Azoff has founded a new legal group called Global Music Rights and is demanding the removal of around 20,000 tracks from the video sharing website.
Azoff, who handles song rights, alleges the site does not have permission to play songs by around 40 artists including Williams, Cornell and the Eagles, as well as John Lennon and Smokey Robinson.
He is threatening legal action against the site in what could amount to a $1 billion battle over the music videos, according to The Hollywood Reporter.
Howard King, an attorney representing Global Music Rights, warns “there will be a billion-dollar copyright infringement lawsuit filed” if the situation is not resolved.