Krishna Bewilders Brahma. In order to convince Brahma that all those calves and boys were not the original ones, the calves and boys who were playing with Krishna transformed into Vishnu forms. Actually, the original ones were sleeping under the spell of Brahma's mystic power, but the present ones, seen by Brahma, were all immediate expansions of Krishna, or Vishnu. Krsna Book, Chapter 13.
GOVINDA http://krishna.com/ "The Gayatri mantra is the very vibration of Lord Krishna’s flute. When the sound of Lord Krishna’s flute entered through the ears of Lord Brahma then it came out of his mouth as Gayatri mantra."