Old music halls are places where people used to go to listen to live music. Odeons (6 letters) were large, ornate theatres that were popular in the early 20th century. They were often used for concerts and other musical performances. Odea (4 letters) were smaller venues, usually located in pubs or clubs, which were used for more intimate performances. Both odeons and odea provided a place for people to enjoy music in a social setting.