When boys’ voices change from a childhood treble to a lower adult voice it is important to treat the voice particularly carefully. Pushing it too hard may cause permanent damage. Changing Voices contains a collection ofsongs to help the young singer through this period.
| Instrument | Pianoackompanjemang , Sang |
| Typ (fx Lärobok, samling m.m.) | Partitur |
| Media | Noter |
| ISMN | 9790577004723 |