Aziz mian was born in 1948. Aziz was a traditional qawwal and he was very famous for singing ghazals which is his own style of qawwali. He holds the record for singing the longest commercially released qawwali.
Nustrat was born in 1948. Nustrat Fateh Ali khan a qawwali sing who was also known as the king of qawwali. Nustrat is considered the most important qawwal in history. Nustrat was very famous and put qawwali on the map.