Mula has sung in Lucia di Lammermoor, La bohème, and Manon, among others. She is also a renowned Violetta in La traviata, and has sung the role in many cities around the world, including Tokyo, Bilbao, Orange, Trieste, and Toronto. In 2007, she performed Adina in L'elisir d'amore at Toulouse, and in 2009 she sang the title role in Gounod's Mireille with the Paris Opera at the Palais Garnier, a performance that was issued on DVD. Also in 2009, she released the album Il Bel Sogno, a compilation of opera arias.