How many instruments players were needed to form the pitpeat?

The term "pit peat" seems to be a misunderstanding or misspelling. If you're referring to a specific ensemble or musical group, such as a pit orchestra for a musical or theatrical production, the number of instrumentalists typically varies based on the score and the production's needs, but it often ranges from around 5 to 30 musicians. If you meant something else, please clarify, and I'd be happy to help!