Srimad Bhagavatam Canto 10, Chapter 29, Text 44

 SB 10.29.44

upagiyamana udgayan
 vanita-sata-yuthapah
malam bibhrad vaijayantim
 vyacaran mandayan vanam
 
 
Translation: 
 
As the gopis sang His praises, that leader of hundreds of women sang loudly in reply. He moved among them, wearing His Vaijayanti garland, beautifying the Vrndavana forest.
 
Purport: 
 
According to Srila Jiva Gosvami, Lord Krsna sang many wonderful melodies and meters, and the gopis accompanied Him, following His lead. Krsna’s singing on this occasion is described in the Sri Visnu Purana:
 
krsnah sarac-candramasam
 kaumudim kumudakaram
jagau gopi-janas tv ekam
 krsna-nama punah punah
 
“Krsna sang the glories of the autumn moon, the moonshine and the lotus-filled river, while the gopis simply sang His name repeatedly.”
Srimad Bhagavatam Canto 10, Chapter 29, Text 43
Srimad Bhagavatam Canto 10, Chapter 29, Text 45-46