Later, she would go on to sing songs for Neel Kamal, a Raj Kapoor and Madhubala starrer, and Hulchul (1951); but her two most famous films would be Bawre Nain (1950) (where she sang for Geeta Bali) and Mahal (1949), where she sang for the Indian actress Madhubala (Rajkumari actually sang for Vijayalaxmi, Lata sang for Madhubala).
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As a result, he gave her an entire song to herself in Pakeezah, Najariya ki Mari.
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After she quit Prakash Pictures, she began playback singing for actresses like Ratnamala, Shobhana Samarth, etc. and soon she became the First Female Playback Singer of Indian Cinema.
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Rajkumari endured a long dry spell until music director Naushad spotted her singing in the chorus for his background score for Pakeezah (1972).