Led Zeppelin have to work on a new arrangement of their classics due to vocalist Robert Plant's change of voice. The 59-year-old singer can no longer hit high notes for his voice has grown lower throughout the years, The Sun newspaper revealed.
A source revealed that the rehearsals for the upcoming December 10 show at London's O2 are not going smooth. "Jimmy is a bit rusty and Robert has been struggling with the high notes," the source said. "To avoid any embarrassing vocal wobbles with the world watching, they decided it would be best to transpose the songs in a lower key."
Guitarist Jimmy Page revealed earlier this month that the band will debut a new song in the reunion concert.
Meanwhile, the rumor that they will continue the reunion with a tour has been denied by the band's rep. "No decision has been made beyond the band's performance at the O2 arena," they said.