Instruct: Classify an Amazon review into positive or negative sentiment.
Query: Toscanini as a egomanical monster

This book portrays Toscanini as a self centered, egomaniac. As described by Chotzinoff Toscanini off stage would be an unbearable presence. Childish, insulting, selfish and cruel are just a few words to add. An old man that demands a toy from a child. A serial adulterer who won't have anything to do with anyone who divorces. If this were truly how AT was in his last 20 years, I pity those who were around him.