このアルバムのチューニングは、D2とD2#のちょうど中間にあたる、Dと1/2#を基準としてあるのが特徴です。ある研究によれば、この周波数は脳がもっともリラックスしやすいと言われているそうです。この周波数に脳波と同じ4~14Hzのθ波~α波に相当する振幅を与えることで、すみやかなリラックス効果を得ることができるように工夫してあります。
These songs has become a configuration that was mainly the arpeggio to rise. Tuning is characterized by some as a reference falls exactly between the D2 # D2, 1/2 # and D. According to some research, it seems it is said that this frequency is easy to relax the most brain. By giving an amplitude corresponding to the 4 ~ 14Hz same EEG θ wave ~ α waves in this frequency, and has been devised to be able to obtain a rapid relaxation effect.
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