So Long, and Thanks for All the Fish is the title of the fourth book in the Hitchhiker’s Guide to the Galaxy series by Douglas Adams. Its title is the message left by the dolphins when the entire species evacuated Planet Earth just before it’s scheduled demolition to make way for a “hyperspace bypass”.
A song with the same name was created for the 2005 film. Right at the beginning of the movie we hear the vocal choir version of the song as performed by Hilary Summers, Kemi Ominiyi, & RSVP Voices.
But did you know that on the Soundtrack CD there is a second version of the song? That’s right and it’s done in the style of lounge singer Richard Cheese but it’s actually Neil Hannon.
The 2005 movie was good but this author highly recommends the six-part miniseries from the BBC. It’s streaming on Hulu right now in the USA. If you want to take a really deep dive, check out the BBC Radio-Dramas based on the books. They are far-out indeed.