I tripped over this request today… it’s been a while since we received it, but I remember doing all kinds of searches trying to find this one and, sadly, my superlibrarian powers failed me at the time. Maybe one of you know this mystery musical monster story?

John says:

I’m a librarian trying to solve a mystery. I am trying to locate a book that was read to me as a child. I do not know the author or title. It told the story of a little boy who entered a building and was scared by a monster named “Do”. He then ran up to the next level and then the next only to encounter monsters that were all named after musical notes. He finally reached the top only to discover Do waiting for him a second time. I would very much like to find a copy of this book or at least know the title or author. None of my co-workers have been able to track it down. It was a primary level book and I checked it out in the early 80s with my first library card.

Well? Can you help our reader out?