Not true. Where do you think the term "organum" came from, anyhow?
A good organist can work out a reverent, musically coherent accompaniment for chant that doesn't drown out the choir. Our man does it all the time (of course he is an absolutely stellar organist, quite possibly the best in the city).
My comment had to do more with her style, i.e. “I’m such a talented singer/musician I can’t believe I’m stuck with you hicks.”
My comment had to do more with her style, i.e. “I’m such a talented singer/musician I can’t believe I’m stuck with you hicks.”