If you really noticed "Bird", he always had a sly grin, as if he knew something he wasn't sharing with anyone; his music, it had something special and different, it was a secret that only he knew. Even today, his "Bird with Strings" sounds like it could have been made yesterday.
https://www.youtube.com/watch?v=DmRkZeGFONg&list=PLqzxGGRskMsArMdq06cOawHAbO2kBWfmD
Notice how he plays the melody so smooth and easy, but Bops and riffs all over and around the melody at the same time; a mixture of be bop and a smooth melody, nobody but Bird could ever do that.
https://www.youtube.com/watch?v=AbXauqq9ayY&index=4&list=PLqzxGGRskMsArMdq06cOawHAbO2kBWfmD
All through this album he does that, and makes all the riffs blend so easy with the melody; that's why his music was deified, "Bird lives on".
Although I only posted two, listen to your favorites on this album that sounds current, even today.