THE SECRETS BEHIND VOICE TRAINING: UNCOVER PROVEN TECHNIQUES TO MASTER YOUR VOCAL RANGE, IMPROVE BREATH CONTROL, AND DEVELOP POWERFUL, CONFIDENT VOCAL DELIVERY FOR SINGERS AT ANY LEVEL
| Country | USA |
| Brand | National Geographic |
| Manufacturer | MapSherpa |
| ItemPartNumber | 749717022560 |
| UPCs | 749717022560 |
| EANs | 0749717022560 |
| ReleaseDate | 0000-00-00 |