Two. prodigious Mridangas of celestial make called Nanda and Upanandaka were tied to it. Struck by mechanical arrangements, they emitted melodies that enhanced the joy of all.
मृदङ्गौ चात्र विपुलौ दिव्यौ नन्दोपनन्दकौ। यन्त्रेणाहन्यमानौ च सुस्वनौ हर्षवर्धनौ॥