Author: Carpenter, Humphrey
Interest age: from c 7 years 
Published 29/10/1987 by Penguin Random House Children's UK (Puffin) in the United Kingdom as part of the Mr Majeika series 
Paperback | 96 pages
'Music teacher? What music teacher?'The sudden arrival of a new music teacher throws St barty's School into confusion. Mysterious smells start coming from the staffroom and creepy-crawlies appear out of nowhere. The new arrival is, of course, Wilhelmina Worlock, a wicked witch with some nasty tricks.
It's up to Mr Majeika to try to outwit her...