Robin Thicke’s hit single “Blurred Lines” has certainly had its fair share of both popularity and controversy. From the success of being Billboard’s No. 1 song and No. 1 album, to the claims of sexism over its lyrics and 18+ film clip and various parody videos criticising its use of #stupidhashtags, the latest development is somewhat less salacious. Thicke and collaborators Pharrell Williams and Clifford Harris, Jr (aka T.I.) have filed a pre-emptive lawsuit in the Californian registry of the United States’ District Court, seeking declarations that the song does not infringe the copyright of Marvin Gaye’s “Got to Give It Up” or Funkadelic’s “Sexy Ways”.