On the July 13th broadcast of SBS Power FM's 'Kim Chang Ryul's Old School', the girls were asked if they went through a hard time for their first ever full-length album 'L.O.L'. SinB said, "We worried a lot because of our choreography. They told us we couldn't go home until we figured out our choreography before the music video filming."
She continued, "We were going to film our dance and send it in, but we had to film it again because a phone rang towards the end. That's when all the members started crying their eyes out. It was 5AM."
Umji also added, "We usually put all of our strength into the last filming, but we felt hopeless having to gather strength again for another time."
Wow! Such hard workers!