"'I am his Muse,' said Miss Brodie."
Public DomainCalliope - Credit: Cesare Dandini

Public Domain'Terpsichore' - Credit: Jean-Marc Nattier
 The Muses in Greek mythology were the nine goddesses who inspired creativity in literature and the arts.

They included Calliope, the Muse of epic poetry, Erato, the Muse of love poetry, and Terpsichore, the Muse of dance and choral song.

There was no specific Muse for the visual arts. The term is being used here to refer to the general concept of a woman who inspires male creativity.