HO CHI MINH CITY, Vietnam — People want to know what President Obama will do after his presidency. Perhaps host of Rap City?

The president was answering questions at a town-hall-style meeting here Wednesday when a young woman told him she was a rapper before asking a question. Obama asked her to perform a few bars and did a brief beat-box rhythm.

"Do you need a little beat?" Obama asked her. "Go ahead, c'mon."

"Vietnam or English?" she asked.

"In Vietnamese, of course, but I won't know what it means," the president replied.

The woman complied and busted out a few bars, getting the audience of 800 young people to clap along with her. She later told the president that the rap was about people with money and big houses not being happy.

The rapper was later revealed to be 26-year-old Hàng Lâm Trang Anh, a performer known here by her stage name Suboi and considered by some to be the nation's "queen of hip hop."