The Crescat learned her lesson about the infamous Sunday night Mass, at least as we know it today. It does seem like a lot of parishes that have the Sunday late afternoon/evening Mass these days resort to contemporary pop/rock/folk/hootenanny music, some even calling it their "LifeTeen" Mass.
Even up my way, there's one very large church in Fall River who has an excellent organist (even at 80 years old, well, next month) primarily traditional music for both Saturday Masses and all three Sunday morning Masses (one is in French), the Sunday night Mass (from what I was told) is the one guitar Mass. My last parish, a roundhouse church in Warwick, had a Sunday late afternoon Mass. Guess what --- the "organist" the pastor hired to play that Mass was one who specialized in those "CCM" styles of music. One church I auditioned at in Springfield, MO, before ultimately coming to Holy Ghost, also has a Sunday night "LifeTeen" Mass.
A couple of decades ago, it wasn't like that. At least not around my neck of the woods. Most parishes that had a folk Mass had it at the later Saturday Mass (back in those days - 70's and 80's - when lots of parishes had TWO Saturday Masses - like, 5:00 and 7:00 - the guitars would have the 7:00). The Sunday late afternoon/night Mass in most places had either the organ or no music at all. In fact, I played three churches with Sunday night Masses. My program was no different from the rest of the Masses - primarily traditional. Many parishes now, at least in my diocese, have done away with that "second Saturday Mass", so I guess the Sunday night crowds become the "new suckers". St. Augustine's Church in Providence STILL uses primarily traditional music at their 5:30 Sunday Mass, played on the 1996-built III/30 Peragallo pipe organ. However, although it was the norm back in the 70's and even some of the 80's, it's definitely the exception now. (I call it leading by example and wishing others would follow suit.)
Now, if it were Mass with standard music at 5, concert in the hall at 6, it may not be so bad. :)