Man. Myth. Creature. Musician's musician.
Words are hard to use for a human of his stature. Some words may pigeonhole, others may exclude or diminish. The best we can do is try.
Here's one: Good. He's good. He doesn't need to practice, but he does. His insatiable appetite for the stage is what drives him forward.
Be a part of the experience, but don't say we didn't warn you.