I think Sinatra probably, but other greats are Nat King Cole, Johnny Hartman, Sam Cooke, Ray Charles and Jimmy Rushing. Some of these other postings are preposterous; they're so wrong as to be unintentionally funny - Chris Isak, Van Morrison, David Bowie? Somebody should be kidding but they're probably not. Ignorance of what constitutes real musical ability apparently is unbounded.
