That's great! I love Gregorian chants! They have induced some amazing states of mind (and possible visions, lol) in your Alchemist. I love many kinds of music, but classical music tends to draw me in, in a way most music does not.
I don't like it as background music, though. I need to be able to immerse myself.
Immersion is definitely the best way to enjoy and appreciate it. Though I must admit to often being a bit of a Philistine and using it as background music.