Show me the Top 20... I bet Britney or Katy are in there
Nah, it would me more of the same women with a few other powerhouses added in. I really stuck with the generation of music the majority of ATRL seems to know. I said pop music because otherwise it would be to much work and I don't have the patience. But there is also:
Aretha
Mahalia
Minnie
Patti
Toni (low register)
Barbra
Pavoratti
Countdown's note is not that hard at all. Bey some pretty hard notes on other songs - Be With You, Dangerously in Love 2, Flaws and All, Resentment, Save the Hero, etc.