Question: A Heldenbaritone is an opera singer, a German dramatic baritone, a voice type is a particular human singing voice identified as having certain qualities or characteristics of vocal range, vocal weight, tessitura, vocal timbre, and vocal transition points, are called what, such as breaks and lifts within the voice?
{'answer': 'passaggio', 'supporting_facts': [['Heldenbaritone', 0], ['Voice type', 0]]}