Academic vocals are when you call a goat on the other side of the river, long and in different voices, and the goat is lost; popular vocals are when drunk men hang-gung for three hours, and then as they tick a girl, and she is so - IX-HA!; and the estrade vocal is when a boiling water is poured on your stomach - and you need to urgently call the "ambulance" on this occasion, well, or call your neighbors.