sentences:  In 1997, Millo sang her first Tosca at the Liceu, Barcelona, with Giacomo Aragall and Juan Pons, followed by performances of that opera at La Scala and at the Met.Other Metropolitan Opera performances include "Mefistofele" (1999–2000) and Gioconda in "La Gioconda" (2006).Millo has also performed several roles with the Opera Orchestra of New York