Yeonjun from TXT and two CORTIS members just gave fans a dance collab to remember! On August 13, 2025, a short clip of TXT’s Yeonjun, with Martin and Juhoon from CORTIS surfaced, joining forces for the “Beautiful Strangers” dance challenge. The trio showed off smooth moves, perfectly matching the dreamy piano line and intense synths of the track. “Beautiful Strangers” is a K-pop track with influences of hip-hop, trap, and EDM, and it’s the main single from TXT’s “Star Chapter: Together” album.
MARTIN and JUHOON from CORTIS joined 'Beautiful Strangers' challenge with TXT’s YEONJUN. pic.twitter.com/BCJq4zXcJg
— TXT BASE (@txtpopbase) August 13, 2025
This link-up is extra special for fans because it marks two generations of K-pop groups coming together. On one hand, we have TXT’s Yeonjun, who debuted with the group in 2019 and developed a successful career. On the other hand, we have Martin and Juhoon, members of CORTIS, an upcoming boy group set to debut on August 18, 2025. This rookie group has been described as a young creator crew with no fixed roles. They will be involved in every aspect of their artistry, from music, songwriting, and choreography to visual production.
To top things off, Martin himself has writing and producing credits in “Beautiful Strangers,” making this dance challenge a full-circle moment. With TXT’s Yeonjun joining Martin and Junhoon for this challenge, fans are seeing a preview of the chemistry and talent brewing within the upcoming boy group. In case you missed it, CORTIS dropped their pre-debut track “GO!,” which will be included in their EP “COLOR OUTSIDE THE LINES,” dropping on August 28.
