A judge says a trial is needed to determine if Led Zeppelin's Stairway To Heaven copies its opening notes from a song by the rock band Spirit.
US District Judge R Gary Klausner ruled on Friday that lawyers for the estate of late Spirit guitarist Randy Wolfe had shown enough evidence to support a case that Stairway To Heaven copies music from the Spirit song Taurus.
Taurus was written in either 1966 or 1967, years before Led Zeppelin released Stairway To Heaven in 1971. Klausner wrote that while the songs have key differences, lawyers for Wolfe's trustee may be able to prove they are substantially similar.
Led Zeppelin and Taurus performed at some concerts and festivals together, but not on the same stage.
A trial is scheduled for May 10 in Los Angeles.