text: In October 2010, HMV Label released "Sarhadein" in which his first and last duet song Tera Milna featuring Hassan and Lata Mangeshkar was released. This song was composed by Hassan and written by Farhat Shahzad. Hassan recorded it in Pakistan in 2009, and Mangeshkar later heard the track and recorded her part in India in 2010, and the song was later mixed for a duet. The same duet was also sung by Hassan and Noor Jehan.
  Following a severe illness in the late 1980s, Hassan cut back on his singing, eventually stepping down from playback singing altogether. Later, due to the severity of his illness, he completely departed from music.
  Death
  Hassan suffered from a serious chronic lung condition for a few years before his death. He also received treatment for lung, urinary tract, and chest ailments at several hospitals in Pakistan for about 12 years prior to his death. Towards the end of 2000, he suffered his first stroke while in Kerala, India. In 2005, he was taken to India for ayurvedic treatment where he was welcomed by A.B. Vajpayee, Dilip Kumar, Lata Mangeshkar and many of his Indian fans. He suffered his second stroke soon after he returned from India which left him with speech impairments and limited his physical mobility. Hassan developed a severe chest infection and breathing difficulties in the days preceding his death. He died of multiple organ failure on 13 June 2012 at Aga Khan University Hospital in Karachi.