South Korean boy band BTS has collaborated with American singer-songwriter Khalid on an upcoming project, which is set to release soon.The K pop band revealed the news to host JoJo Wright on Los Angeles radio station 102.7 KIIS-FM in Los Angeles, E! News cited."I have to mention Khalid, our friend. It is really happening. So please stay tuned to our Khalid collaboration," RM said on air.Recently, the 'Free Spirit' singer also met BTS members- RM, Jin, Suga, J-Hope, Jimin, V and Jungkook backstage at their Rose Bowl concert in Los Angeles, where they clicked a happy picture to commemorate the occasion.Khalid is the latest US musician to collaborate with BTS. Previously, artists like Nicki Minaj, Ed Sheeran and Halsey have also worked with the K-pop band to produce music.The band kick-started its global stadium tour 'Love Yourself: Speak Yourself' at the Rose Bowl Stadium in Pasadena, California on Saturday. The group performed its first song 'Dionysus' all dressed in white and the ...