This music and this performance has a physical effect on me: I find myself frozen, holding my breath - and if I had any hair, it would be standing on-end, and bristling.
So be careful when you listen to this - and avoid if you are driving or operating dangerous machinery.
In passing, this is a (rather extreme, perhaps) demonstration of what I consider to be the virility of Orthodoxy compared with other denominations of Christianity; all of which have a certain... epicene quality about them to my mind. Not fatal, forgivable, preferable to the alternatives - yes... but for me it is a factor which I admit to finding off-putting. Perhaps it has to do with the fact that Orthodox priests are usually married patriarchs, while the monks tend to be heroically ascetic.