Its a guy's name, most commonly used in India.
It's also used as a pun for Hookah Enthusiasts
Person 1 : Hey, what's your name?
Sargam : Hi, I'm Sargam from New Delhi
Person 1 : Its 4 am, I really need to sleep.
Person 2 : Time for Hookah!
Person 1 : You're such a Sargam man!
a better way of saying 'gotcha !'
person 1: really !?
person 2: haha sargam !!