Nearly the entire service is chanted or sung. At each petition, the people make the sign of the cross and bow, offering their prayers physically, as well as mentally. They stand throughout the long service, as Orthodox churches generally lack pews. The clergy move in and out of the sanctuary in what appears to be a precise dance. Acolytes process with candles.
Singers juggle the numerous music and hymn books.
The faithful move back and forth, placing candles on stands before icons. All this appears to be complex and chaotic, but to the worshipers it is all natural. Everyone knows his or her role in the assembly. The visitor is also struck by the hymns and prayers. Some are chanted aloud for all to hear, others recited almost inaudibly.