High Quality Content by WIKIPEDIA articles! Ustad Bahauddin Khan Qawwal (1934 - February 3, 2006) (Urdu: أستاذ قوّال بهاءالدين) was an Pakistani Qawwali musician. All five of his sons - Muhammad Najmuddin (b. 1967), Saifuddin Mehmood (b. 1971), Zafeeruddin Ahmed (b. 1977), Mughisuddin Hassan (b. 1979) and Ehtishamuddin Hussain (b. 1981) - have followed in his footsteps.