rebdoniel and Sam2: I doubt that the playing of music in shuls was ever disallowed. Playing it on Shabbos has always been the question in shuls- because playing music is a “shvus” and could be allowed by a non-jew . It was vehemently opposed for the reason that Sam2 is giving: the identity of X-ian music and its adoption by Reform. Hence, Carlebach minyonimm are OK! (I attend many of them).
Sam2- I feel uncomfortable how you are making fairly minor transgressions “Yeihareg V’al Yaavor’ (your spelling). I know some of these are considered “avizrayo” but I kind of feel that the ultimate sacrifice should be for ultimate transgressions- hired murder, incest and idolatry.
rebdoniel: I do marvel at your erudition but it would be useful if you bring us sources for your many claims-such as that the Remo allowed marriage to occur on Shabbat.