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The room received its name due to its location next to the choir chamber of the Palace Chapel. According to Vasily Neyelov 's plans, the room had two windows on the courtyard side, and two windows on the north wall looking out on the Palace Chapel. The walls of the anteroom were covered in apricot-coloured silk. At the end of the 18th century, Charles Cameron set up a divider here, thus creating the "room next to the chapel" and the "dressing room of Grand Duke Paul." The two windows looking out onto the church were filled in. During the remodelling in 1844 - 1845, the architect Vasily Stasov, carrying out the orders of Emperor Nicholas I, took down the divider and restored the room to its original, brightly lit state.
The walls of the room were covered in wallpaper and were complemented by a gilded stucco frieze depicting cornflower bouquets. In 1894, the walls of the Choir Chamber Anteroom were covered in factory-produced golden silk with a fabric design of pheasants and swans. The silk was woven at the Sapozhnikov factory and was a copy of unique handmade silk from the late 18th century. The Sapozhnikov factory silk was lost during World War II. Today the architectural design of the Choir Anteroom is a recreation based on sketches from the 19th century. The stucco frieze, ceiling and inlaid floor have all been restored. The walls have again been covered in gold silk depicting pheasants and swans from the palace stores; this silk was produced at the factory of State Councillor I. L. Lazarev in the village of Fryanovo outside Moscow from drawings by the well-known 18th-century French decorative artist, Philippe de la Salle (1720 - 1808). At the request of Empress Catherine II, he produced designs for silk destined for the imperial Petersburg palaces, including the Great (Catherine) Palace. The master's name was printed on each piece of silk woven on hand looms by peasant masters. Thus, we today we know the names of Sergei and Nikolai Strelnikov, Nikolai Diachkov and Ivan Bely. One of the weavers, one Vasily, was nicknamed "the Spider." This title was considered high praise of the weaver's art. It was this silk that was copied at the end of the 19th century at the Sapozhnikov factory. This factory-produced fabric was also used to upholster a carved, gilded divan produced in the 18th century possibly according to drawings by Bartolomeo Francesco Rastrelli. This silk was also used for the draperies in the Choir Anteroom. The Choir Anteroom was opened in 1959 following restoration.