Suor Angelica

Suor Angelica (Sister Angelica) is an opera in one act by Giacomo Puccini to an original Italian libretto by Giovacchino Forzano. It is the second opera of the trio of operas known as Il trittico (Triptych). It received its world premiere at the Metropolitan Opera on December 14, 1918.
The opera opens with scenes showing typical aspects of life in the convent — all the sisters sing hymns, the Monitor scolds two lay-sisters, everyone gathers for recreation in the courtyard. The sisters rejoice because, as the Mistress of Novices explains, this is the first of three evenings that occur each year when the setting sun strikes the fountain to turn its water golden. This event causes the sisters to remember a sister who has died, Bianca Rosa. Sister Genevieve suggests they pour some of the golden water onto her tomb.