Somebody at SBS had a good day. CORTIS turned up in the broadcaster's coin karaoke booth for episode 15 of UP코노 and sang '하루하루', credited in the title to BIGBANG as the original artist — two minutes and twelve seconds, posted at five in the afternoon Korean time on August 4.
Six hours earlier, at eleven that morning, BIGBANG's own channel had posted a nineteen-second clip announcing a 2026-2027 world tour under the title [ XX : COSMOS ]. Nothing connects the two beyond the calendar, and this desk is not going to pretend otherwise — but hearing the song on the day the group behind it said they were coming back is the kind of thing a fan notices.
The performance drew 8,395 views against 4,484 likes in its first hour and a half, at the time of writing, on a channel of 8.77 million subscribers. The description discloses that the segment was made with sponsor support.
CORTIS have had a busy week on their own channel too — a 'MOTION (feat. Juicy J)' visualizer behind-the-scenes on August 3, then three clips through August 4, the last of them with Tablo of EPIK HIGH. All of it sits on the group's record page here, dated to the minute.