Yaser Bakhtiari, better known by his stage name Yas (یاس), is an Iranian rapper. Yas is one of the most popular rappers in Iran and Middle East. He is also known for his Faravahar pendant, a symbol of Iranian nationalism and Zoroastrianism, that he wears most of the time. On 21 December 2011 Yas was chosen by the voters as the Artist of the Week in MTV IGGY Entitled Tehran’s Hard-Hitting MC.