Following Zohran Mamdani’s mayor-elect victory, the Bollywood song Dhoom Machale shot to viral status- here’s the back story on the hit track and its buzz.

Mr. Garg sang in dozens of languages and his music blended folk, pop and rock. His hit song “Ya Ali” was featured in the 2006 film “Gangster.” By Mark Walker and Suhasini Raj Zubeen Garg, the singer ...