Opera reviews: La Traviata, Bellini's Norma and Der Rosenkavalier at the Proms

A THRILLINGLY-sung La Traviata brings Verdi's tragedy back to Glyndebourne with a bang; Bellini's Norma finds a star with an enthralling voice worthy of the demanding role; magnificent performances in Strauss's Der Rosenkavalier as part of the Proms at the Royal Albert Hall