[{"Bold_text": "noun", "List Items": ["a musical composition consisting of the singing of melody with vowel sounds or nonsense syllables rather than text, as for special effect in classical compositions, in polyphonic jazz singing by special groups, or in virtuoso vocal .", "any such singing exercise or vocalized ."]}, {"Bold_text": "verb (used with or without object)", "List Items": ["Chiefly British. vocalize ."]}]