Generaly church music is uplifting, would it be safe to say that mozart falls into this obscureidea of what is acceptable, but then again Chopins funeral sonata would be out of place on the wrong occasion

Church seems about conveying messages, What kind of message do you want to convey??? positive/negative???
Apparently the church accepts music from the rock genre now

so you would have to think very hard of a piece that would offend God, and only you would know if that was the case. so when he eventualy asks you this question you better have a good explanation

That is of course if you need to explain that you are not testing him (deep and dark this is)
By choosing the wrong answer the path to the dark side you choose. temptation is a path to the dark side, tread carefully. Intention is 9/10ths of the law