The answer to this question depends (as it usually does, and especially when it comes to a ‘belcanto’ opera) on the particular singer.  Barcelona has always seen, until now, the soprano version, the best known, but Malibran’s  voice was certainly not the kind of Ronzi de Begnis’ (furthermore, the latter had sung at Naples Buondelmonte  while Malibran was the first Stuarda at Milano when the opera appeared for the first time with its actual...