In 1957, Hassan was again given the opportunity to sing on
Radio Pakistan, primarily as a
thumri singer and later as a ghazal performer, which earned him recognition within the musical fraternity. He had a passion for
Urdu poetry, and therefore, he began to experiment by singing ghazals on a part-time basis. He cites radio officers
Z.A. Bukhari and Rafiq Anwar as additional influences in his progression as a ghazal singer. so immense was the popularity of Hassan's rendition of the ghazal that Faiz stopped reciting it in his 'mushairas' (poetry reciting events) and, instead, recommended that the audience ask Hassan to sing it for them, because the ghazal now belonged to Hassan. In October 2010,
Saregama, an Indian record 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==