American soprano Sondra Radvanovsky is acknowledged by audiences and critics throughout North America and Europe as one of today's few true Verdi sopranos. She is returning to Lyric this season to sing her first Amelia, one of the most eagerly awaited role debuts of her career. Here she discusses the formidable challenges of the role in relation to other heroines in her repertoire. Lyric Opera dramaturg Roger Pines poses the questions.