Terpsichora in Greek and Roman Biography and Mythology
（*Teryixo/ra), one of the nine Muses, presided over choral
song and dancing. (Hes. Theog. 78 ; Pind. Isthm. 2.7; Plat.
Phaedr. p. 259 ; comp. MUSAE.) - A Dictionary of Greek and
Roman biography and mythology, William Smith, Ed.
Terpsichore in Wikipedia
In Greek mythology, Terpsichore (pronounced /tərpˈsɪkəri/)
(Τερψιχόρη) "delight of dancing" was one of the nine Muses,
ruling over dance and the dramatic chorus. She lends her name
to the word "terpsichorean" which means "of or relating to
dance". She is usually depicted sitting down, holding a lyre,
accompanying the dancers' choirs with her music. She is
sometimes said to be the mother of the Sirens by Achelous. Her
name comes from the Greek words τέρπω ("delight") and χoρός