SEE ALSO: A Pink win #1 + Performances from December 12th 'Music Bank'!

BTOB's Changsub wrote on his Instagram on the 13th, "Music Bank yesterday," along with a selca of them cheering each other on with some food. Chorong, Namjoo, and BTOB also looked like they came straight from the North Pole with their Christmas-themed stage outfits, and had a lot to celebrate with A Pink's win on 'Music Bank' that day.

Shout-out to the Cube/A-Cube family!