Register is very important. Music sounds best in a certain register.
You can work on the saxophone alone, but ultimately you must perform with others.
Saxophone is one thing, and music is another.
The saxophone is a very interesting machine, but I'm more interested in music.
If you listen to Louis Armstrong from 1929, you will never hear anything better than that really, and you will never hear anything more free than that.
When I found the music of Monk I finally found music that fit that horn. Every one of his tunes fit it perfectly.