SSO Chorus

I do not have sufficient information about the SSO Chorus, as the location has not been specified. Several choirs and vocal ensembles might use the acronym 'SSO' to denote an association with a symphony or similar organization, and without specific regional context, it's challenging to provide an accurate description. If further details such as the country or city were provided, it might help to precisely identify and describe the organization. Please consider providing additional context or details.