... a video of the Ethiopian Orthodox liturgy. Amazing! [For the first few seconds, I thought the chant was Indian. The modes are very similar to certain N. Indian ragas, I would say. But noticeably different too ... ]
I was reminded of what the good priest told us on our visit to St. Ignatios after the Divine Liturgy: how the Eastern liturgy has a more hidden, mystical aspect, that is brought out in different ways in the Eastern rites: in the Ethiopian rite it's through chanting and smoke. In fact, he described the Ethiopian rite as this progression of chant and incense, with the sermon coming after the actual liturgy was over!
[Also via Don Jim. Who sometimes, gets links from some scary people, such as this fellow ... which led me to this one ... ]