Top 6 - Pop Singers

Well, I wonder. There's plenty to choose from but the rules are that one can only name six.

So, who's the best one, then. Could it be,

Aretha Franklin, for this http://www.youtube.com/watch?v=4cIWu5m8UmA

Rod Stewart, for this http://www.youtube.com/watch?v=2oX2FSv4Rys&ob=av2n

Dusty Springfield, for this, http://www.youtube.com/watch?v=EA48IL6bQQU

Al Green, for this, http://www.youtube.com/watch?v=Xz7XTbveDBg

Gregory Isaacs, for this, http://www.youtube.com/watch?v=I8yaBa7-kwQ

or

David Bowie, for this, http://www.youtube.com/watch?v=VbpMpRq6DV4&ob=av2e