| vcl-4 | This user is a professional violoncellist. |
| vla-2 | This user is an intermediate violist. |
| vln-2 | This user is an intermediate violinist. |
| bass-2 | This user is an intermediate bass singer. |
| pno-2 | This user is an intermediate pianist. |
| rec-1 | This user is a novice recorder player. |
