They commonly used church choirs for infiltration in the 1980s.
So-called music ministries are rife with heathen, hypocrites, and heretics.
I don't doubt it, without impugning every one of them.
Without being overly nit-picky, I'd view any male organist with special suspicion, unless soundly in a long-time marriage with children. Yes, we can profile with success in our churches.