Batushka (БАТЮШКА) are an anonymous Polish black metal band. Their music and lyrics, which are written exclusively in Old Church Slavonic language, are inspired by the Eastern Orthodox Church. The band members wear habits and Eastern Orthodox schemas during live performances to conceal their identities. In contrast with many other black metal bands, they use eight string guitars.

The founder came up with the idea of combining black metal and traditional liturgical songs of the Orthodox Church after reading comments on YouTube videos of Orthodox music, saying how "God’s hymns are more metal than any satanic black metal music out there".

https://en.wikipedia.org/wiki/Degrees_of_Eastern_Orthodox_monasticism

Repeated symbols are commonly used on the analavos, the distinctive garment worn by monks that have reached the Great Schema to reference religious imagery, biblical stories, lessons and devotion to Christ. Symbols include: a rooster representing the denial of Peter. A pillar for the column that Pontius Pilate bound Christ to, the wreath for the crown of thorns, the uprate post and transverse beam represent the patibulum. Four spikes for the nails of the cross. The skull and crossbones represents the Adamah, or the returning to the ground at death of Adam and all humankind. The plaque represents the initialism Jesus, King of the Jews. The reed for the Holy Sponge, the Holy Lance. Ladders and pincers under the base for Joseph of Arimathea lowering the body and descending Christ. The central object is often the cross of Christ.