The Harvard-Radcliffe Orchestra, an informal organization operated jointly for the past 15 years by the officers of the Pierian Sodality of 1808 and the Radcliffe Orchestra, held an official merging ceremony Tuesday night.

Only one set of officers will now be needed to manage the orchestra, which has been 50 per cent female for several years. By voting to accept a revised constitution which allows Radcliffe membership in the Pierian sodality, the H.R.O. changed a 150-year tradition of the Sodality, strictly a male organization since its inception.