I was watching it all, watching Sam sing inside a kind of luminous geometric cage, when I started to realise something. I’m up in space, man… I’ve searched around the universe… what does this song remind me of? What it reminds me of, I think - it took me a while to put it all together - is Star Maker, a 1937 novel by Olaf Stapledon, and one of the weirdest, most ambitious science fiction novels I’ve ever read.