It was written to be sung straight
So no gay barbershop quartet then?
“Straight” meaning without excessive flourish.
https://www.merriam-webster.com/dictionary/straight
3f : not deviating from an indicated pattern
3g (1) : exhibiting no deviation from what is established or accepted as usual, normal, or proper : conventional
Gay barbershop quartet rendition would probably be amazing so long as it wasn’t overdone.