Aandhi (1975)
Aandhi (translation: Storm) is a 1975 Indian political drama film directed by Gulzar. At the time, the film was allegdedly based on life of then-Prime Minister Indira Gandhi and her relationship with her estranged husband, but in reality, only the look was inspired by politician Tarkeshwari Sinha, apart from Indira Gandhi, though this got the film into controversy. The film story is based around a chance meeting of an estranged couple after several years, when wife Aarti Devi, now a leading politician happens to stay in the hotel run by her husband during an election campaign. The movie is noted for its songs composed by Rahul Dev Burman, written by Gulzar and sung by Kishore Kumar and Lata Mangeshkar.
More at Wikipedia.