Caitanya-caritāmṛta 2.155
manuṣya nā dekhe — madhura gīta-mātra śune govindādi sabe meli’ kaila anumāne
[manushya naa dekhe — madhura geeta-maatra shune govindaadi sabe meli’ kaila anumaane]
Blended reading (Sanskrit + English inline)
manuṣya nā dekhe — madhura gīta-mātra śune govindādi sabe meli’ kaila anumāne
No one could see him, but they could hear him singing in a sweet voice. Therefore all the devotees, headed by Govinda, made this guess.
My note
Source: vedabase.io