Recently we had Ken Watters come to my school and hold a master class. He played us some jazz and then instucted us for a while. He took my fellow trumpeter and myself aside to talk to us personally. He commented that my friend used more of his top lip. He stated that this will help him with range. He said that I use a perfect half and half combination. He stated that this will give me a stronger middle range. Is this correct? Will this effect my quest to a strong upper register?