Another musician whose music I love is the late Ray Charles. There was an incredible ebullience underlying his performances. Soulfulness, joyfulness, mischievousness, intensity, liveliness, quiet passion, are things that come to my mind when I think of Ray Charles' performances.
This is quite fun. Here is a video of Charles appearing on Sesame Street singing the alphabet song to a jazzy shuffle beat with some kids gathered around.
Sadly, he is an example of an artist whose personal life was in some ways not the most admirable. Again, we are confronted with the complexity and fallenness of human life.
I saw him perform live around 2001 or so and it was amazing the incredible zeal, the charisma, and the high performance energy that he still possessed in his 70's!