BTS is back on Cultwo Show radio! 

On the radio show that aired on October 13, BTS discussed their recent release, ''Blood, Sweat & Tears'' to the listeners. The boys thanked everyone for their interest and support. 

October 13 also happens to be Jimin's birthday, so all the audience and group members sang a happy birthday song on the show. The Cultwo staff also surprised Jimin with specially made birthday mug and a paper bag, bringing a lot of laughter to the studio. 

Rap Monster also mentioned a recent sold out record of 38,000 seats for their concert, commenting, "Fans give us energy, and we feel stronger." 

Check out the birthday festivities starting at the 3:30 mark below.