Music For Concentration
- 专辑：Sleeping Music: Healing Solfeggio Frequencies, Binaural Beats, Alpha Waves, Theta Waves, Delta Waves, Soothing Tones and Calm Music For Relaxation, Brainwave Entrainment and Deep Sleep
- 语种：其他
- 流派：New Age
- 唱片公司：Stream Cloud Records
- 发行时间：2020-03-02