BTS launch Proof, a triple album of new and old songs, with promise that the best is ‘Yet to Come’

• Three-disc album from the K-pop boy band has some fresh tracks, such as For Youth, about the bond with their Army fans, as well as many of their old songs
• ‘It is a reflection of the time we spent together … and the emotions we felt,’ band member Jungkook says as he and others face having to do military service