| Artist | : | Power Focus - 14Hz Beta Waves that Improve Concentration and Focus |
| Title | : | Study Sonic Focus |
| Duration | : | 6935 |
| Source | : | Youtube |
| Type of file | : | Audio/Video (.mp3 .mp4) |
| Artist | : | Power Focus - 14Hz Beta Waves that Improve Concentration and Focus |
| Title | : | Study Sonic Focus |
| Duration | : | 6935 |
| Source | : | Youtube |
| Type of file | : | Audio/Video (.mp3 .mp4) |