In reply to Mr. Ken.

There is nothing wrong with a singer drinking. As long as she drinks water, the dehydration from the alcohol has almost zero damage. Mariah's vocal problems are natural with age. All she needs is a vocal instructor that can rearrange her songs to fit the current state of her voice. Lots of older artists have done this and it worked great. You can't belt like you did at 20 when you are closer to 50 so new arrangements make the songs fit your voice better. I think Mariah sings in full voice too much and that is why people criticize her too much instead of being appreciative that she is an old-school singer that does not mind actually sanging.