I'd vote for Garland too. There's the power and intensity of her instrument, coupled with her unique live performance histrionics. She was also an underrated actress, with sly, wry intelligent delivery and a sharp sense of comedy. (I actually much prefer her slightly world-weary Annie in the Annie Get Your Gun outtakes to the overeager, muggy Betty Hutton). Then, add in the childhood stardom, the career setbacks and comebacks, the addictions, the gay husbands, Liza, and a tragic death, and she's got all of the stuff to hold the title as Greatest Entertainer of All Time. Just for slipping "Battle Hymn of the Republic" past the objections of the CBS brass on "The Judy Garland Show," following the Kennedy Assassination, earns her that recognition.
"Gif me the cobra jool!"