Sorry if I could just come in. No Lubavitcher school starts a niggun when someone has a question. A niggun of a tzadik led by a tzadik can do that in exceptional situations. On the contrary Chabad means we engage with the mind.
Questions do come from a lack of clarity. That is why in nigle sources, which deal with clarifying good/ evil etc. there�s many more questions than in Nistar, which is only about achdus Hashem (no matters involving tumah etc).
In golus, we ask many questions. In geula, we will learn in a way of seeing- things will be much clearer.
However, if one does have a question, obviously ask, or, ain habayshon lameid. Asking is great!