UPDATE: As a continuation to my post below. Here is an article posted in a 1938 issue of Downbeat magazine recalling the January 16th Battle of Bands at the Savoy that featured Chick Webb (with vocalist Ella Fitzgerald) and Count Basie (with vocalist Billie Holiday). This night was exceptionally memorable as Benny Goodman’s band, including drummer Gene Krupa, arrived after playing their own concert at Carnegie Hall. Duke Ellington also arrived and wound up swinging along with Basie on the piano after being persuaded to play. Both bands brought the roof down but Webb’s orchestra came out on top.