I am of an age that I grew up to the big bands and have attended them over my many years. Even going to a college Louie Prima and Kellie Smith college dance, I attended many big band concerts in New York City. Guy Lombardo did in fact lead the band but not as the one to distract from the band. The leader at the Tommy Dorsey band was discreet and did not detract from the band. It was not a "big deal" just an annoying distraction.