Boston Lyric Opera’s new podcast, AT ITS (s)CORE, is a music-focused bi-weekly series centered around a single piece of music that sparks conversations between artists about their shared experiences in the process of making opera, and living a life filled with music. Boston Lyric Opera Music Director David Angus and BLO Concertmaster Annie Rabbat helm the first episode. Angus and Rabbat discuss a selection of music from Giacomo Puccini’s Madama Butterfly, which Rabbat used as an audition piece for her role in the BLO Orchestra.