As much as I think John Coltrane belongs on the list, I think without Coleman Hawkins and Lester Young, both of whom defined improvising on the tenor sax, there would not have been the evolution of the craft by John Coltrane.
Herbie MannOne of the advantages of not having a record contract is that you can make your own mistakes, you don't need somebody else to organize them for you.
Herbie Mann