There are three main groups that use the theatre at present.
Mount Gambier Theatre Group. This is a group set up for the community almost 60 years ago, and has a reputation of putting on quality productions whether they are plays or even the odd musical.
Mount Gambier Choral Society underwrites Showcase. Part of the charter of the Choral Society is to foster singers of all ages to develop their skills and enjoyment of vocal and choral music and singing.
Backstage Inc. was formed in 1978 to promote the performing arts. As part of the promotional work, the Mount Gambier Eisteddfod was commenced in 1982 to give people the opportunity to perform in public while being adjudicated on the standard of their work.
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