Former Led Zeppelin frontman Robert Plant led a tribute to Scottish folk icon Bert Jansch in London on Tuesday night (03Dec13). The rocker joined members of the guitarist's folk-rock act Pentangle and British singer/songwriters Donovan and Ralph McTell, among others, at the Royal Festival Hall. The gig was staged on what would have been Jansch's 70th birthday. He lost his battle with lung cancer in 2011. The folk star's last performance with a reformed Pentangle took place at the Royal Festival Hall just two months before his death.