An exclusive clip of LED ZEPPELIN playing "Rock and Roll" live at Knebworth '79 is now live on the BBC homepage. If you don’t see it right away, you're probably looking at the international version of the site. Click on "UK version" at the top to watch the clip.Robert Plant insists that LED ZEPPELIN's reunion show next month in London is not a dry run for an upcoming world tour. Plant told Uncut, "There'll be one show and that'll be it. We need one last great show because we've done some (reunion) shows and they've been crap." When asked if the one show will lead to the temptation to take the show on the road, Plant said, "Not for me, but I can't speak for anyone else." Plant was asked if he ever thought about touring with ZEPPELIN, if only to blow the band's longtime competitors THE WHO and The ROLLING STONES away: "We weren't in competition with anybody. We were LED ZEPPELIN. We were at that time the biggest band in the world. There wasn't anyone else. There was no one near us. We were out there on our own. And blowing everybody away isn't the issue anymore. Blowing myself away is the issue. That's what it's all about now." He went on to knock THE WHO and the STONES, who have carried on pleasing fans over the years despite losing founding members: "They're doing what they're doing. It keeps them off the streets, I suppose." Robert Plant's album with Alison Krauss, called "Raising Sand", was released on October 23. LED ZEPPELIN will perform their first full-length concert since 1980 on November 26 at London's O2 Arena. The show, a memorial for late Atlantic Records co-founder Ahmet Ertegun, will also feature performances by Pete Townshend, Bill Wyman, and FOREIGNER.