odeum

noun, plural o·de·a [oh-dee–uh] /oʊˈdi ə/.

1. a hall, theater, or other structure for musical or dramatic performances.
2. (in ancient Greece and Rome) a roofed building for musical performances.

noun plural odea (ˈəʊdɪə)

1. (esp in ancient Greece and Rome) a building for musical performancesAlso called: odeon

n.“concert hall,” c.1600, from Latin odeum, from Greek odeion, the name of a public building in Athens designed for musical performances, from oide “song” (see ode).