| 1-10 | = Average person who can sing well. |
| 11-50 | = Good singing voice. |
| 51-70 | = Talented singer (pop star). |
| 71-80 | = Trained singer who can sing any kind of song or style. |
| 81-90 | = Classical singer, opera performer. |
| 91+ | = Famous for their voice, could sing the birds down from the trees. |