I heard Kumbayah in the 60s and 70s at Mass, most assuredly. I also remember playing Anne Murray’s “You Needed Me” while the projector at the college Mass played a collage of those misty ‘emotive’ pictures of people smiling and walking down a road in their 'life journey to God." Not to mention Manilow’s “Could It Be Magic” in the college cathedral for a nuptial Mass in 1976. And “Blowin in the Wind” was a staple for the ‘closing song’ at many Masses, along with Peter, Paul and Mary’s “If I had a Hammer” (hey, Jesus was a carpenter, right?

), “Abraham, Martin and John” was popular with the Peace and Justice crowd, and “Turn, Turn, Turn” was a big hit at communion time.
These things we remember, we were there. Often we were even willing participants, caught up by priests who told us to ‘follow our conscience’ and not to bother with musty old rules, etc.
They may have meant well, they may have thought what they did was not only good and valid, but necessary to enforce “Vatican II” and to attract us (then) teens and young adults. But even for those of us who were of a generation where this was ‘contemporary’ music found, very soon, that we were uncomfortable with a lot of what this style led to.
It is one thing to appeal to ‘common elements’ and to emphasize the similarities in order to attract people to the gospel. It is another to artificially manufacture ‘commonality’, as well as to cling to a mythos of that ‘moment in time’ as being the defining moment of the ‘new’ Catholicism, and to jettison everything before it, as well as refuse to consider anything ‘different’ since it. When was the last time that you heard a Mass setting – a contemporary one–that didn’t sound like something you could hear on the radio as an ‘older’ jazz, rock, or ‘folk’ sound? There are musical styles that have come about since those three above–so why are some so adamant about rejecting anything that is ‘new’ and different, if they were so adamant about rejecting all that came ‘before’ the 60s, in order to promote the 'new and different?"