Simplify the following text for a Grade 6 native English-speaking person.
Original: Nouhad Wadi Haddad ( Arabic : Ù Ù Ø Ø Ø Ø Ø Ø ) ( born November 21 , 1935 ) , famously known as Fairuz ( Arabic : Ù Ù Ø Ù Ø , also spelled Fairouz or Fayrouz ) is a Lebanese singer who is widely considered to be the most famous living singer in the Arab world and one of the best known of all time .
Simplified: Fairuz ( born Nouhad Haddad ( Arabic : Ù Ù Ø Ø Ø Ø Ø Ø â ) November 21 , 1935 ) is a Lebanese singer .