This is where the story really starts...
We'll soon be embarking on the fifth series of the Goon Show.
For the first four series there have been only a few surviving recordings, and some of those are only fragments. From here on in, though, every episode survives in some way, making the Goon Show one of the most well-preserved shows of its era.
Greenslade: This is the BBC Home Service. Presenting ... [FX: Gong] Neddie: And beautifully preserved, too.
(from 'Emperor of the Universe', Series 7 Episode 14, broadcast 3 January 1957)