I found out yesterday from my friend, who sent me the Serbian video, that there is a group of musicians, singers and others who are using this video as a way to raise money to rebuild monastery Djurdjevi Stupovi in Ras. Also, some of the funds raised will also go to help Serbian children who are in need. This group may eventually form ties with Ancient Faith Radio in the future because at this point they do not have an American channel to share their message.
Scamandrius, I think this particular Byzantine tone is also used on Holy Thursday (Today He is suspended on a Tree).
I am glad you all enjoyed the videos.