The Sufis of ancient times, the great mystics, used to develop this art in order to bring about poise in life after their everyday activity. They called this art sama, and sama has been the most sacred thing for the Sufis; it has been a meditation for them. They meditated by the help of music, by having a certain music played which had a certain effect upon the development of the individual. The great poets, such as Rumi of Persia, used to have music for their meditation, and by the help of music they used to repose and to control the activity of their body and mind.