Just what I was going to say Dick !! Apart from the inherent Lack of Politeness in CREATING a barrier (The Bloody Book) between the singr and the audience .
I have NO problem with an experienced singer having the lyrics of a NEW song (to them) available as an Aide Memoire when they are working on new material .
When EVERY floor singer is using a book , it certainly encourages me NOT to bother going back to that club .