Artie Shaw, who died today at 94, was the last remaining figure of the big-band era. And he was a renowned bandleader.
He was a big-band leader. Or a big band leader, if you're so inclined.
But he was not a big bandleader, as NPR idenitifies him in a cutline here.
This is the same concept that requires us to write "small-business man" instead of "small businessman."