Question: Hassan Sattar (known as Sattar Persian: ) is an Iranian Pop-tenor Oratorio singer with specialization in both Persian Pop and Classical music. He had gained fame before the Islamic Revolution and became Pahlavi Royal Family court singer up until the political upheavals of the late 1970s. He left Iran in 1978 and has taken residence in the United States since then. Given a list of categories: company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, what category does the paragraph belong to?
Answer:
Artist