A Life for the Tsar
At noon, midnight, 6 am and 6 pm the chimes play a short excerpt from the national anthem after the hour strikes, while at 3 am, 9 am, 3 pm and 9 pm it plays the melody of the "Glory" chorus from Glinka's opera "A Life for the Tsar". The clock is set twice a day. The original clock was wound by hand, but from 1937, it was done using three electric motors.