“Moonmadness” by Camel.
Wow! I had heard of Camel before, but this is the first full album I’ve listened to. It will be in my collection as soon as I can conveniently arrange it 🙂 . (Edit and I now have the CD!) Solid prog rock in a fantastic style. Well worth a listen, and stands up to repeated play.
There’s an Easter egg. To find it, pretend you’re British while reading the track titles.
More details at Prog Archives.