Answer
Mohammad Rafi is Sonu Nigam's musical idol. Rafi was a legendary Indian singer known for his exceptional vocal range, versatility, and emotional depth. His influence on Nigam is evident in the latter's singing style, which incorporates Rafi's signature techniques such as melismatic ornamentation and nuanced phrasing. Nigam has often expressed his admiration for Rafi, citing his ability to convey emotions through his voice as a source of inspiration.