Greta Tuotanto is a music theatre organization led by Reetta Ristimäki; it produces music theatre and opera performances year-round and spearheads the Helsinki Opera Summer festival. Staging two to four premieres annually, the organization focuses its productions particularly on historical and socially relevant themes. Most of the works are world premieres created in collaboration with Finnish composers and writers. Greta Tuotanto does not have a permanent venue; instead, most of its stage productions and concerts are designed for touring, appearing at festivals, cultural centers, concert halls, theatre stages, and other venues across Finland and abroad.