Well did he do it for his 94th birthday at reyo city music hall to sold out crowd, he delivered with alzheimer s disease completely solid performance. he got standing ovations. but until the end we weren t sure if he was going to be completely able to perform as flawlessly as he did and he didn t i remember i was sitting next to a physician friend of mine and she said to me, what do you mean he has dementia? he doesn t have dementia. there s no sign of it. i thought that s one down for us. that s remarkable and following up on that from a neurological standpoint you think that singing specifically activates a lot of the brown the sound the rhythm of music. what is it about music and singing that is powerful for the mind and perhaps helped here? well, i think singing