This poster is an advertisement for the opera Sapho that premiered in 1897. This French opera premiered at the same theater that Yorick saw his opera in, the Theatre de l'Opera-Comique.
Four white women are playing music in concert with each other, one on flute, one on piano, one on violin, one on cello. They range in age, with the cellist appearing as an old woman, while the other musicians appear youthful. The painting is meant to…