Aderaba, it is better to listen to non-Jewish A-Capella (as long as it is via a speaker) than live “Jewish” (and how “Jewish” is it) music that includes instruments throughout the year. Pashtus from reading Rav Moshe in Iggros 1:166 (last 2 lines).
Personally, if Klal Yisroel can be Meikel like the Bach for Chodosh (which is M’dioraysa), they certainly can be Somech on the Rama, Tos. & Rashi for Zimrah.