I Capuleti e i Montecchi is considered by many Bellini’s first masterpiece. It certainly recalls in many ways the great belcanto era, particularly in the way the roles are organized: the mezzo-soprano as male protagonist, the soprano as his lover, the tenor as the hero’s rival, bass and bariton respectively as the noble father and the tyrant. However, Capuleti is not strictly a belcanto opera because of its intimate and at times dramatic atmosphere. So much so that the many embellishments, counterbalanced by a well-defined melodic core, are not ornamentation anymore but start to take an expressive connotation.
Operatic voices are divided into 4 categories: soprano (high female), alto (low female), tenor (high male) and bass (low male). There are also 2 intermediate voices: mezzo soprano, female voice and baritone, male voice between tenor and bass. There are many more subtle distinctions used to define the range, tone, colour and timbre of a voice. They developed as a consequence of increasingly demanding roles which required more specific vocal types.