This week in the course there was a student who is a music teacher. When we discussed different professions and what people do, she explained that she teaches singing and solfeggio. She asked me how to say solfeggio in English, and I had to think about it. It turned out that I actually don't know this word at all, because I've never used it before. I checked the dictionary and it turned out that solfeggio is solfeggio, sol-fa.
Elementary, but who would know;-)
I'm posting this word so that if anyone needs it, they can learn it and avoid getting into an awkward situation like I did;-)