As if he'd been singing on TV his whole life, Yung smashed his performance out of the park and even made house band leader Reggie Watts cry.
On his Twitter account, Yung tells of his struggle to get noticed.
He has "been in the subway for 30 years, stabbed nine times, jumped by an entire project and still chasing my dream," he says.
He says in the decades he's been singing in the subway, he's only received a US$100 note four times, and one of those came from a homeless man who slept on 42nd Street.
Now, he's working on an album, saying: "Got some great people helping me out. Fingers crossed this time. Gonna get me out the subways."
