Did you notice that, unlike when Pence visited the Mayo Clinic and it was obvious that he was the ONLY one not wearing a mask, when Trump toured that Honeywell N95 mask factory, NO ONE in his entourage wore masks, despite the big sign on the wall saying that it was mandatory? They didn't dare make Trump look bad. Even the Honeywell executive, who should have known better, didn't a mask. You notice those doctors at the Mayo Clinic didn't care if their behavior made the VP look like an idiot. I guess the Honeywell people were too scared to do the right thing, a sort of 'Emperor's New Clothes' kind of moment.
As for the music, perhaps it was an employee who was NOT a member of Trump's 'base'.