ok, until it becomes repetitious and puts one sleep ;)

I'm not sure I'd necessarily go out of my way to listen to it, but it is quite mesmerizing in full concert.

Five stars for the history, the longevity, and the overall feeling of tranquility that it brings.

I was watching the goober televangelist channel.  Did they call this Romish Popery or Popish Romery?  I can't remember.  Anyhow, I like it, but not as a steady diet.

ROMISH POPERY!

Just Kidding, it's good for a change every so often...

Its odd that with all the items on this list which have such broad definitions like "classical" "punk" "new age" and "classic rock" we also have this, which is easily and narrowly defined. 

An extremely early form of sacred music, dating back about 1400 years, it has a fine sonorous resonance. 

I like it, although in small doses, and I'd be curious to hear a Gregorian/hip hop fusion band.

A pretty narrow musical category compared to most of the others on this list.  And in the last, oh say 300 years there has really only been broad popular exposure to a grand total of maybe 3 albums wirth of music.  For a brief period in the 1990's a group of monks became the strangest musical stars since the Singing Nun when their cleverly marketed CD's became must have Sunday brunch music for North American baby boomers.

Something very enigmatic and mysterious about this music. It makes me feel weird in a good way.

Sure, it was the very first music, but really, it's just dull and uncreative--with very little actual music to speak of.

Best utilized in Monty Python and the Holy Grail. (thump)

I love this - but in small doses. It can be extremely relaxing and ethereal.

Eerily beautiful compositions.

The earliest of western sacred music, going back to the time of Gregory the Great in the 6th century. Varied, mutated and elaborated for hundreds of years, the settings of Latin texts from the Vulgate eventually transformed into most of the types of music of later ages. Not only was the development astonishing but the beauty of the original endures; there is a kind of timeless peace and serenity one can get from listening to Gregorian chant which is not quite attainable anywhere else. One of the priceless gems of the early middle ages.