There are multiple artists named Libretto: 1)One of the most important developments in Portland music has been the local and national success of Libretto and Lifesavas. They're longtime Portlanders steady grindin' with their crew, Misfit Massive, since the mid-'90s. But their 2003 release, Spirit in Stone (Quannum), put them in the worldwide underground, and exposed them to parts of the city that might not have known their music otherwise (aka much of white Portland). Read more on Last.fm