Rookie girl group and MBLAQ’s label mate Two X made its debut on the August 16 broadcast of Mnet’s M Countdown.

The five-member girl group shimmered on stage in pearlescent outfits, performing debut single Double Up. The key to the choreography appears to be a peace sign, representing the song’s “double up” theme.

The single was released on the same day.

Check out the performance below!