Sunny Hill focus on their 'Monday Blues' moves in new performance MV

Sunny Hill show their preparation process for their comeback in behind-the-scenes video

Learn how to shake off your 'Monday Blues' with Sunny Hill through their 'Let's Dance' tutorial

Sunny Hill release BTS footage of their jacket photo shoot

Sunny Hill try to get over their 'Monday Blues' at the office in new MV

Sunny Hill release MV teaser for 'Monday Blues'

IU has the Monday Blues too?