Chip Deffaa (born 1951) is an author, jazz historian, playwright, songwriter and director.

The recordings made during this period are considered by fans and jazz historians to be his best and most influential.

His father was Walter Schaap, one of the first jazz historians and discographers.

Still, jazz historians say, it was vital to the development of the music.

But some jazz historians question whether a program like Jazz Outreach can pass along the tradition.

The cause was a heart attack, said his son, the jazz historian and broadcaster Phil Schaap.

It is only in the last 40 years that jazz historians, not to mention people at large, have gotten a proper handle on the subject.

The thoroughness of the series points out something that has often been overlooked by jazz historians in their general bias against pop culture.

Gene Lees, 82, Canadian jazz historian and critic, heart disease.