A behind-the-scenes look at the special collaboration stage between Coldplay and BTS's Jin has been revealed.

On April 20, Coldplay posted rehearsal photos featuring Jin on their official social media. The photos showcase rehearsals of 'My Universe' and 'The Astronaut' with Jin.

In the released images, Coldplay's Chris Martin and Jin are seen checking their stage performance while getting drenched in rain. Jin, wearing a raincoat, and Chris Martin are both energetically rehearsing, capturing attention with their passionate dedication.

Chris Martin also showed warm friendship by putting his arm around Jin’s shoulder as they headed back to the main stage. Another photo shows Jin holding a banner toward Chris Martin with determination.

Jin made a surprise appearance during Coldplay's third-day concert at the Goyang Sports Complex on April 19. He first appeared during the “Songbook” segment, where Chris Martin invites audience members to sing along on stage. Jin held a banner that read, “My bro. Can I sing ‘The Astronaut’ with you? Pick me plz,” and Chris Martin called him up to the stage.

Upon seeing Jin, Chris Martin knelt down, and Jin also knelt to greet him—showcasing their strong brotherly bond. The two then performed 'My Universe' together.

'The Astronaut' is Jin’s solo debut song, with Coldplay contributing to both lyrics and composition, which drew widespread attention. BTS and Coldplay previously collaborated on 'My Universe', and during the concert, holograms of the BTS members currently serving in the military appeared on the LED screens. 

Chris Martin also expressed his affection for the BTS members by mentioning them directly, showing his continued support.