बदलती दुनिया

A 1943 social drama from Murari Pictures, Bombay, directed by Mohan Sinha and headlined by Mumtaz Shanti and Trilok Kapoor. As the title 'Badalti Duniya' (The Changing World) suggests, the film is built around the moral and social churn of its era — the kind of reformist melodrama that wartime Bombay cinema produced in volume — with the blind singer-composer K.C. Dey appearing on screen and lending his devotional, philosophical voice to several of its songs.

Sources report roughly eleven songs across the film's four composers. K.C. Dey composed and sang the philosophical numbers 'Is Badalti Duniya Mein', 'Haar Na Jana' and 'Bol Bol Tu Bol'; Rajkumari sang 'Tu Mujhe Bana Le Rani'; and 'Mera Tan Nache Mera Mann Nache', composed by Haribhai Bhojak, is the film's signature dance number. Lyrics throughout are credited to director Mohan Sinha.

Badalti Duniya is notable for its unusually crowded music department — four music directors (K.C. Dey, Khan Mastana, Pandit Madhukar and Haribhai Bhojak) sharing a single soundtrack, a common practice in early-1940s Bombay where studios pooled composing talent. K.C. Dey's screen presence and his self-composed, self-sung philosophical numbers are the film's chief musical legacy.