歌曲 | Babbling Brook and Beta Low Binaural Beats Background Sounds for Your Work - Improved Attention Span, Higher Concentration, Increased Brainpower |
歌手 | Torsten Abrolat |
专辑 | Stimulating Background Sounds for the Workplace - Increasing Brainpower & Concentration, Working More Easily, Longer Learning, Not Falling Asleep, Binaural Beats |