“Batti, batti, o bel Masetto” is an aria from Wolfgang Amadeus Mozart’s opera “Don Giovanni,” specifically from Act 1, Scene 5. In this aria, Zerlina pleads with her fiancé, Masetto, to forgive her for her flirtatious behavior and infidelity. It’s a beautiful piece that showcases Mozart’s talent for writing emotionally expressive music. If you have any specific questions or need more information about this aria, feel free to ask!