Stairway to Heaven Author Fight Set for May

Led Zeppelin's lawyers, however, plan to get the copyright case tossed out beforehand.

Robert Plant, left, and Jimmy Page, of Led Zeppelin.

Source: Robert Knight Archive/Redferns via Getty Images

The judge presiding over a lawsuit challenging the authenticity of Led Zeppelin's signature song Stairway to Heaven rejected a bid to delay the case, setting the stage for a May trial -- if it doesn't get settled or dismissed before then.

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