Periodic evidence in ancient texts indicates that dance was held in high regard, in particular for its educational qualities. Dance, along with writing, music, and physical exercise, was fundamental to the commenced in a circle and ended with the dancers facing one another. When not dancing in a circle the dancers held their hands high or waved them to the left and right. They held cymbals (very like the zilia of today) or a kerchief in their hands, and their movements were emphasized by their long sleeves. As they danced, they sang, either set songs or extemporized ones, sometimes in unison, sometimes in refrain, repeating the verse sung by the lead dancer. The onlookers joined in, clapping the rhythm or singing. Professional singers, often the musicians themselves, composed lyrics to suit the occasion.