Led Zeppelin has stood accused of nicking licks and melodies from a wide assortment of American bluesmen including Sonny Boy Williamson, Willie Dixon, Howlin' Wolf, Robert Johnson, and Muddy Waters.
These charges have never been proven, but on occasion the band has acknowledged sources and added song credits.
Now the band's epic hallmark "Stairway To Heaven" is in the docket, following a California court filing last week brought by an attorney representing the band Spirit and it's deceased frontman and songwriter Randy California (né Randy Craig Wolfe). The suit claims passages in the iconic song plagiarize Spirit's own composition called "Taurus".
The resemblances are quite striking in places. You can listen to "Taurus" here and compare other alleged Zep rip-offs here.