Complex sentence: His main teacher there was Louis Brassin, a former pupil of Ignaz Moscheles, although he also took lessons from other staffers at the institution, including Joseph Dupont, François-Auguste Gevaert and Fernand Kufferath.
Split into simpler sentences: His main teacher there was Louis Brassin, a former pupil of Ignaz Moscheles. Other Conservatoire teachers he had included Joseph Dupont, François-Auguste Gevaert and Fernand Kufferath.