Roy Eldridge, dubbed “Little Jazz” for his small stature and boisterous trumpet style, was an absolute giant of swing music, but he ventured into other realms too. His session with sax man Benny Carter on “Polite Blues” shows how effortlessly Eldridge could settle into a slow, slinky R&B crawl, while his bold, blaring solo on the ‘40s big-band number “Thanks for the Boogie Ride” illustrates how versatile his hard-swinging wail truly was.