an Entity references as follows:
Masters of Persian Music is a Persian classical music ensemble (or "supergroup") founded in 2000 by four internationally recognized ustāds (masters) of the genre: vocalist Mohammad-Reza Shajarian; composer-musicians Hossein Alizâdeh and Kayhan Kalhor; and M. R. Shajarian's son, multi-instrumentalist singer Homayoun Shajarian.