'Тропарь Покрова Пресвятой Богородицы' - Troparion

"Тропарь Покрова Пресвятой Богородицы"
Покровского Суздальского Пресвятой Богородицы
Глас 4. синодический Песнь

Here I present the "Troparion for the Holy Virgin's Protecting Veil", a Tone 4. Synodal Chant.

Sung here by the Choir of the Holy Virgin's Protecting Veil".

Accompanying photographs of St. Nicholas Female Community, in Sanin Village, Suzdal.

[finnhere]

Do they sing in Russian, or in Church Slavonic?
Lovely piece nevertheless, thanks for uploading!