I'm not entirely certain what the producer's role is but I'm sure it doesn't need eleven people to do it. Anyway check out the video and see if they've earned their money. [YouTube Video]
This is a bit of an odd one. The picture sleeve would suggest 'I Type Supertype is the A side but the labels say it's the B. I'm assuming Miss Supertype is the artist but some internet sellers think it's Charles Wilp, the producer.
I bought it for the Jeff Lynne involvement. Someone must have noticed Supertype (an Olympia typewriter model) and Xanadu both have three syllables so created this song to the tune of Xanadu, presumably for a commercial.