"cool jazz" since 2001. Just search under "cool jazz". I, for one, do not think that Bix's style is "cool" in the sense of what is known today as "cool jazz."
Albert
Re: Lots of discussions of Bix as progenitor of. Brendan Wolfe on Nov 1, 2009The Birth of the Cool 1927. Emrah Erken on Nov 2, 2009