Nuns Convent of the Sacred Heart in Rome, singing at the organ. 1849 Karl Pavlovich Bryullov (1799-1852)

The picture has something of this: people, saint, woman, veil, god, church, book, two, Mary, baby, nun, portrait, holy, prayer.
Perhaps it’s a painting of a group of women standing next to each other in front of a pipe organ and a man with a sheet of paper in his hand.