I'm no music expert but it took a while to get into A ONE because of its mixing - and I still have a hard time listening to WARNING x__x I don't know why but most songs feel "flat", especially in songs like Last minute and Sorrows, when all instruments hit at once and you instead of feeling blown away by all that it just makes a wall of sound in your ears. Gosh, Last minute could have been even stronger than it is if not for that
While MIJ was an improvement, I felt things going backwards with TROUBLE. It makes me so sad cause her music is so amazing and it feels like these new stuff ain't getting to the better state they could be.