Ethics are more important than laws. Which means that the exact note is less important than the feeling of the note.
Swing is extreme coordination. It's a maintaining balance, equilibrium. It's about executing very difficult rhythms with a panache and a feeling in the context of very strict time. So, everything about the swing is about some guideline and some grid and the elegant way that you negotiate your way through that grid.
Grace Kelly plays with intelligence, wit and feeling. She has a great amount of natural ability and the ability to adapt. That is the hallmark of a first-class jazz musician.