Perhaps not as beautiful or as captivating as the chant in the previous post but perhaps more apposite to the time of year.
It is from a Service for the Feast of the Dormition of the Virgin
It is again a Medieval Byzantine Chant entitled "Θεαρχίω νεύματι" (With a sign by the authority of God)
"A very interesting note about this specific chant is that while it is one text and chanted as a whole, it contains all 8 tones of Byzantine Music.
Each phrase is chanted in one of those 8 tones.
The first two phrases are the glorification of the Trinity (hence the type of the chant as a Doxastikon - ie a glorification hymn).
Then, the chant goes:
0:52 - 1st Tone1:42 - Plagal 1st Tone2:21 - 2nd Tone3:12 - Plagal 2nd Tone5:04 - 3rd Tone5:59 - Plagal 3rd (Grave) Tone7:12 - 4th Tone7:40 - Plagal 4th Tone9:38 - 1st Tone
An easy way to understand when the Tone changes is to note the changes from solo chant to choir. When such a change occurs the Tone changes, except after 7:40."