In 1940, Bombay film star Motilal — a distant relative — heard a shy government clerk sing at a wedding in Delhi and brought him back to Bombay for formal lessons. That clerk was Mukesh Chand Mathur, and five years later his playback debut, "Dil Jalta Hai To Jalne De," sounded so much like his idol K. L. Saigal that people reportedly argued in the streets over whose voice it was. Composers Anil Biswas, then Naushad Ali, coaxed him out of the impression and into a plainer, sob-catching baritone of his own — one that became Raj Kapoor's screen voice for three decades and won four Filmfare awards. "Papa was my guru," his son Nitin later said. "He taught me... sing with your heart, so that it reaches the hearts of others." Mukesh died on tour in Detroit in 1976.
Mukesh set out, by every account, to be "a second Saigal" — he haunted the studio during K. L. Saigal's own sessions for Shahjehan, and in 1945 his playback debut, "Dil Jalta Hai To Jalne De," matched the older singer's raga Darbari phrasing so exactly that all of India was reportedly taking bets over whose voice was on the record. Saigal himself heard it and, as one paper later reported, could only say: "That's strange, I don't recall singing that song." It was the clearest proof a young singer had absorbed his idol whole.
listen forSaigal's 1938 "Babul Mora Naihar Chhooto Jaye," recorded for the film Street Singer, sets its grief in raga Darbari with a slow, unhurried baritone that lets each phrase sag before it resolves. Mukesh's breakout "Dil Jalta Hai To Jalne De," seven years later, borrows that same patient sag and raga-adjacent melancholy so closely it's easy to hear why listeners argued over whose voice was actually on the record.
Composer Naushad Ali is the name every retrospective gives for the moment Mukesh stopped sounding like Saigal and started sounding like himself, casting him on four solos for Andaz (1949) after Mela (1948) had shown what the two could do together. Mukesh's son Nitin later put the shift plainly: "While Papa did imbibe K L Saigal's style, he was quick to evolve his own." The plainer, sob-catching baritone that carried Mukesh through the next three decades took its first real shape under Naushad's direction.
listen forPlay "Ankhiyan Milake," Naushad's 1944 arrangement for singer Zohrabai Ambalewali on Rattan, against Mukesh's "Toote Na Dil Toote Na" from Andaz five years later: the same spacious, raga-inflected string writing frames the voice, but where the earlier record keeps its ornamentation in the melody, Mukesh's baritone carries the ache directly — plainer, slower, nearer to speech, the style Naushad is credited with drawing out of him.