Definitely, but we also need to consider that before the industrial revolution, Christians were limited in their options (most folks were very poor by modern standards, there isn't much diversity in music in general, and there is a comparatively narrow [and at various times, more corrupt] group of people making decisions on theology and music). So we need to consider history, but we don't weight all history evenly--there is such a thing as 'progress', after all.

That's a bold claim that too many people accept without question and about which too few actually consider the implications.

Progress is improvement. It's moving forward. The notion requires accepting the idea that you were at one point behind where you are now or not as developed/complete/refined. That's fine if you are talking about technology or some other mundane topic, but to make that claim in the context of Christianity - a religion ENTIRELY dependent upon the veracity and completeness of the stories and traditions it is based upon - is to call into question the entire faith.

But to imply that from the BEGINNING Christians were incorrect on something as important as sacramental theology and the role of music in sacramental theology is a completely separate claim with severe implications, as I described above.