Something I noticed about Protestant congregations is they will have one service listed as Traditional and another as Contemporary. Catholic parishes seem to be all of one or the other. Why not have one Mass with Latin and Gregorian chant (which the 2nd Vatican Council that the disaffected parishioners profess devotion to said was to be maintained, and in the case of Gregorian chant given pride of place) and another with the Haugen-Haas songs and everyone is kept happy?