Upvote:1
This is purely subjective, and others may feel differently. I'm not claiming this to be an absolute truth, but here it goes:
I believe that Catholic theology is centered around exaltation and Orthodox theology is centered around humbleness.
I see this in the different architectural approaches. Catholic churches with their tall, narrow and pointy windows instill a sense of exaltation, of going upwards towards the Heavens while the huge central Pantokrator icon of Christ on the ceiling of every Orthodox church is extremely humbling.
The iconographies speak the same thing to me as well. The Catholic canonical depiction of the Resurrection depicts Christ triumphantly rising from the grave, sometimes alone sometimes with two angels bowing down to Him, again, very exalting. The Orthodox canonical depiction of the Resurrection shows Christ rising triumphantly from a defeated Hell (gates and keys broken), dragging Adam and Eve out of their graves, again, humbling, as we, the sinners, identify with Adam and Eve.
And finally, I perceive Gregorian chanting to be exalting and Byzantine chanting to be humbling.
However, I may be wrong, the perception of music is a huge academic field, but I've pointed out the unrelated examples of architecture and iconography to validate my (again, subjective) consistency.