Some Beyoncé fans were in for a big surprise when the singer crashed their karaoke session.

According to the Miami New Times, Beyoncé and Jay Z pulled up to Sing Sing Karaoke in Miami around midnight on Tuesday for an impromptu karaoke session with Kelly Rowland and Michelle Williams.

At the time Bey and Jay showed up, only two out of the 17 karaoke rooms were occupied.

“A big security-looking guy walked in and asked us what time we closed,” said Sing Sing owner Kellie Pilicer. “I’m thinking he’s going to come in with maybe a couple of other people and then all of a sudden a couple of people wearing hoodies do start trickling in and one woman comes up and asks me where the bathroom is and I look up and it’s freaking Beyoncé.”

Jay Z and the rest of the group headed to the VIP room. They were friendly and didn’t make any outrageous demands, only asking for tape to be placed over the security cameras that were installed in the room.

Bey and Kelly decided that they wanted to go into one of the other rooms, which was occupied by a group of girls who were there for six hours, singing and drinking Miami Long Islands.

They walked in to find the girls singing Beyoncé’s “Party.” “They start dancing together, but they have no idea who it is,” said Pilicer. “And all of a sudden one of the girls looks at Kelly and says, ‘Oh, you look like Kelly Rowland,’ and then she looks at Beyoncé and goes, ‘Oh my God!'”

Beyoncé and Kelly posed for photos with the fans and even photo bombed the girl who was passed out on the couch. See the priceless surveillance photos below.