Here’s a turn-up for the books for one lucky Beyonce fan.

Last night, at the Miami branch of karaoke joint Sing Sing Karaoke, three friends were having an intimate sing-song, as you do. However, as one of the party started to sing Beyonce’s Happy, two strangers entered the room…. none other than Beyonce and Kelly Rowland!

According to the venue’s Facebook page, a host of other stars, including Jay Z, Timbaland and Michelle Williams were also present (though didn’t surprise the mini-party): “They took the VIP room with about 10 other people with them, including Kelly and Michelle from Destiny’s Child. Possibly Timbaland, too, but I couldn’t be sure. I heard a various mix of songs. But at the exact same time they came in, another room with three girls were singing a Beyoncé song (just by total coincidence) and Beyoncé heard them and went in their room and took pics with them. Needless to say, those girls were in shock”.

Check out the posts below for some pretty-cool snaps!