Through the 1950s and 1960s, live studio broadcasting still dominated the orchestra's schedule, and there was little time in its schedule for public performances. This situation changed after Norman Del Mar's advent as Principal Conductor in 1960. He led the BBC Scottish Orchestra's first visit to The Proms in 1962, and through his efforts the orchestra was further expanded, which led to a change of its title to the "BBC Scottish Symphony Orchestra" the following year. Del Mar's earliest projects included the UK premiere of Stockhausen's "Gruppen", performed jointly in Glasgow with the Scottish National Orchestra, and it was his interest in contemporary music that laid the foundation for the BBC SSO's long-standing commitment to new work. The BBC SSO has continued to perform the work of Scottish composers in Scotland and at The Proms, such as the 1990 Premiere of James MacMillan's "The Confession of Isobel Gowdie".