The term 'Master Conductor' is a job title for someone who is responsible for leading an orchestra or ensemble. The term can also be shortened to 'MAESTRO', which is a 7-letter word that is often used in crosswords. A Master Conductor is responsible for rehearsing and conducting the musicians, as well as selecting the music to be performed. They must have a deep understanding of musical theory and composition, as well as the ability to lead and motivate the musicians.