Producer: Masaya Uechi (member of the Japanese Music Therapy Association) [Inaudible message activates subconscious] Efficacy: Easy to concentrate. Concentration will be sustained. I'm smart. Listen when you don't want to study or when you can't concentrate, and it will be easier than ever. The Yakusou series is a music therapy that heals stress that is likely to occur in daily life with suggestive messages analyzed and devised from the aspect of cognitive psychology and comfortable music. Narration is inserted into the music 36 million times in 50 minutes at a volume, frequency, and speed that is hard to hear, and the (inaudible) narration becomes an implied message and naturally creates the subconscious mind. In a two-year clinical trial, 80% of people say they feel the effect.