per Bill Crow's essay:
While Woody's band was in New York, Jimmy made his first records with a quintet led by Al Haig that included Getz, bassist Clyde Lombardi and drummer Charlie Perry, for Bob Shad's Sittin' In label. By the time the records were released, Getz's solo on the Woody Herman recording of Ralph Burns's Early Autumn had made him famous, so Shad released the records under the name of "The Stan Getz Quintet," much to Haig's dismay.
Maybe they couldn't get these sides? Or maybe there's a quibble about them being Getz-led? You'd not know otherwise by the sound of the material:
This still early-ish Getz, with a definite bop influence.