KiT Album - Jewelcase. 1x Album Package. 1x KiT. 1x Credit Card. 12x Square Card. 1x Ball Chain. "YB Does Heavy Metal."Even knowing this fact beforehand, I couldn't help but chuckle when listening to Rebellion.Seriously? This much?From the very beginning, the intense guitar riff that lasts for about30 seconds completely takes you by surprise.The relentless onslaught of interlocking riffs that follows is something entirely new somethingyou wouldn't have expected from YB before.Though heavy music is often overlooked for not being mainstream,I believe that some of the most progressive musical experiments frequently happen within the heaviness genre.If so, then this album is yet another evolution for YB.Never did I think I would use terms like djent or modern heavy metal wordstypically reserved for discussing heavy music when talking about YB's music.The first thing that will shock you is Yoon Do-hyun's growling vocals,but you'll continue to be blown away by the heavy performances of every band member,including drummer Kim Jin-won.By collaborating with their juniors, Xdinary Heroes, a band-style idol group under JYP,they successfully blended emotional singing into the composition.This collaboration wraps the heavy sound in just the right fit, seamlessly merging intensity with emotion.The production and sound design also deserve special mention.There are very few examples of heavy sounds being captured with such precision.Rebellion is, quite literally, the power of heaviness._Critic, Kim Hak-seon_