深層睡眠 is a melancholic, low-energy track by 考試 from α波學習音樂 - 最適合的溫柔學習音樂為了集中注意力, released May 15, 2019. It runs 6:37 at 68 テンポ (136 テンポ double-time) in C Major (Camelot 8B).

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