Abdul Hayee (8 March 1921 – 25 October 1980), popularly known by his pen name (takhallus) Sahir Ludhianvi, was an Indian poet and film song lyricist who wrote primarily in Urdu in addition to Hindi.[1] He is regarded one of the greatest and revolutionary film lyricist and poet of the 20th century India.[2]
https://en.m.wikipedia.org/wiki/Sahir_Ludhianvi
The Progressive Writers' Association or the Progressive Writers' Movement of India or Anjuman Tarraqi Pasand Mussanafin-e-Hind (Urdu: انجمن ترقی پسند مصنفینِ ہند) or Akhil Bhartiya Pragatishil Lekhak Sangh (Hindi: अखिल भारतीय प्रगतिशील लेखक संघ) was a progressive literary movement in pre-partition British India. Some branches of this writers' group existed around the world besides in India and Pakistan.[1]
These groups were anti-imperialistic and left-oriented, and sought to inspire people through their writings advocating equality among all humans and attacking social injustice and backwardness in the society.[2]
https://en.m.wikipedia.org/wiki/Progressive_Writers%27_Movement
Salma Siddiqui (18 June 1931 – 13 February 2017) was an Indian novelist in the Urdu language and a prominent member of the Progressive Writers' Movement.
https://en.m.wikipedia.org/wiki/Salma_Siddiqui