What a courageous decision. Congratulations to Spies on her choice. If the Torah forbids Kol Isha then you can't be the one creating the prohibion. The moral line is not decided by public opinion but by well documented laws. If the moral line would be decided by public opinion, nude singers would be quite acceptable.
U.S., allies conduct 31 air strikes in Syria and Iraq against ISIS militants (Reuters)
from the article: Raising their voices