Valmiki Ramayana Ayodhya Kanda Sarga 91 Shloka 46

नारदः Narada, तुम्भुरुः Tumburu, गोपः Gopa, प्रवराः distinguished ones, सूर्यवर्चसः resembling the brightness of the Sun, एते these, गन्धर्वराजानः kings among gandharvas, भरतस्य Bharata's, अग्रतः presence, जगुः began to sing.

There along with Narada, Tumburu and Gopa, distinguished kings of the gandharvas, looking bright like the Sun, began to sing in the presence of Bharata.