to almost dismiss one of the greats, Elvis Presley as a footnote, seems a bit strange. Suggest that Amy will be forgotten sooner than later, whilst Elvis will live longer in people's hearts. I never was a fan of Amy, thought her overrated. I did hear one of her tunes the other day, and though it was quite good, didn't have a clue it was her, until someone told me. If you want a brilliant singer, songwriter, one who could have made a major impact was Eva Cassidy, who sadly died young from cancer i believe.
Perhaps it's just a question of taste.