Was it beautiful? (I would think it impossible not to be!)
Yes it was!
I usually attend Mass at a FSSP parish that has a very beautiful church and a very talented organist/choir, and today the choir of the SSPX chapel was not as skilled, and there was no organ, and the church was also much smaller, but nevertheless, it would be foolish not to attend SSPX mass just because of that!
I really like the SSPX chapel. God-willing, I will be attending Mass there from now on.