When the transcendental sound of Krsna’s flute vibrates, the devotee’s anxiety to hear that flute penetrates the covering of the material world and enters the spiritual sky, where the transcendental sound of the flute enters into the ears of the gopis and their followers. The sound of Krsna’s flute always resides within the ears of the gopis and increases their ecstasy. When they hear it, no other sound can enter their ears, and they are unable to reply properly to their family members’ questions, for all these beautiful sounds are vibrating in their ears.

From Teachings of Lord Caitanya, Chapter 10: The Beauty of Krsna by Srila Prabhupada