I'm not much of a coder so I'll keep it simple rather than try to create an instrument template for my novice squeezebox (concertina) talents or a language one for the little Arabic I speak, especially as few people here would benefit from either, I imagine. Their loss :)

vla-3 This user is an advanced violist.
msop-3 This user is an advanced mezzosoprano singer.
vln-2 This user is an intermediate violinist.
pno-1 This user is a novice pianist.
en This user speaks English at a native level.
fr Cet utilisateur parle fran├žais.