Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 44

Sanskrit:

उपगीयमान उद्गायन् वनिताशतयूथप: ।मालां बिभ्रद्वैजयन्तीं व्यचरन्मण्डयन् वनम् ॥ ४४ ॥

ITRANS:

upagīyamāna udgāyanvanitā-śata-yūthapaḥmālāṁ bibhrad vaijayantīṁvyacaran maṇḍayan vanam

Translation:

As the gopīs sang His praises, that leader of hundreds of women sang loudly in reply. He moved among them, wearing His Vaijayantī garland, beautifying the Vṛndāvana forest.

Purport:

According to Śrīla Jīva Gosvāmī, Lord Kṛṣṇa sang many wonderful melodies and meters, and the gopīs accompanied Him, following His lead. Kṛṣṇa’s singing on this occasion is described in the Śrī Viṣṇu Purāṇa: “Kṛṣṇa sang the glories of the autumn moon, the moonshine and the lotus-filled river, while the gopīs simply sang His name repeatedly.”