Here is an example in the Cambridge English Dictionary.
A string quartet was playing Mozart.
Is this correct? or should it be "A string quartet were playing Mozart. Is a quartet an "it" or a "they"?
I have looked at previous questions but they do not answer my question as they relate to the singular or plural form of the group (staff or staffs) which I do not dispute The group is singular
I don't really what to know what the Quartet "does" every night. However, I prefer to know if a quartet can play or if it plays every night. hence was it playing or were they playing. In either case, the quartet remains singular.
The definition of a "Quartet" being
a group of four people who play musical instruments or sing as a group:
If we were to presume that the quartet was playing, then, would it not then follow, if we are not in a "Subjunctive Mood", that we should say
"That pair of black trousers was too short" as opposed to "That pair of black trousers were too short"?
Even more confusingly, in our "soirée musicale", we seem to be dehumanising people, relegating them to being mere objects," whilst our trousers seem to be given the benefit of the doubt, even if "they" were too short". Should not a musician's humanity take preference over a group's singularity?