Robert Plant and Jimmy Page are preparing to defend themselves in a U.S. Federal Court over a lawsuit claiming they plagiarized the opening riff to ‘Stairway to Heaven’ from a band called Spirit. The band is being sued by the man representing deceased Spirit guitarist Randy California and Randy’s trust fund. Among wanting a song credit on Stairway, the lawsuit also wants a piece of the pie that Stairway has raked in, somewhere around 560 million dollars. Back in 2014, Jimmy Page talked how about the making of Stairway to Heaven.