Answer
The main composers whose works Montserrat Caballé is known to have performed are Rossini, Bellini, and Donizetti. She was particularly renowned for her interpretations of Rossini's "La Cenerentola" and "The Barber of Seville", Bellini's "Norma" and "La Sonnambula", and Donizetti's "Lucia di Lammermoor" and "La Fille du Régiment". Caballé's performances of these works were characterized by their virtuosity, technical brilliance, and emotional intensity.