Music does not only communicate through words.
The association of Christianity and the misconduct of empire builders and maintainers is overdrawn. Christianity is used as an excuse for conflict and conquest, but Christians have always ultimately rejected such behavior. The "getting rid of religion" Communist support for secularism has not fared so well, either, in China and Russia. Russia has even returned to Christian Orthodoxy.
The public "Christian" Church, Institutional Christian Religion, and individual Christian faith are all different.