Another gopÄ« said, “My dear friends, Kṛṣṇa is so nicely dressed that He appears to be the impetus to various kinds of ceremonies held by the womenfolk. Even the wives of the denizens of heaven become attracted after hearing the transcendental sound of His flute. Although they are traveling in the air in their airplanes, enjoying the company of their husbands, on hearing the sound of Kṛṣṇa’s flute, they immediately become perturbed. Their hair is loosened, and their tight belts are slackened.” This means that the transcendental sound of the flute of Kṛṣṇa extended to all corners of the universe. Also, it is significant that the gopÄ«s knew about the different kinds of airplanes flying in the sky.
(Krsna Book).