One of the positive aspects of the tussle that's been happening between Led Zeppelin's Robert Plant and Jimmy Page regarding reuniting the band is that Page has been able to focus on repackaging their recorded library.
That process is all but complete as their albums have all been re-engineered and rereleased. This collection of the sessions they laid down on various BBC radio and television programmes pretty much wraps up the project.
Because they broke the mould when they started out in 1968, by deliberately not recording or releasing singles, they proved a problem for the BBC whose programmes were very much oriented around bands playing their latest single.
Nonetheless Led Zeppelin forced a change of policy at the Beeb, and this three album set revisits the sessions between 1968 and 1971.
Fans have long chased bootlegged versions of this material, and when you hear the original recordings it's easy to understand why.