Most Helpful Girl
Along with having a talent of singing if anyone wants to be accomplished with it they also have to be an entertainer. Or at least have an heir about them. I assume that'd would be the case, however in today's world of increasing low standards and lack there of, of talent, all a person needs to do is put some auto-tune on it a voilá.
For singing even if one started out not being able to hold a tune or only having a little bit of tune, with training they might get to a few bars of range. If they can handle the vocals of say... singing the American national anthem then they're alright. Only reason why I used that as an example is bc it gives an idea of how range and pitch keep changing and if you can't sing that then the person probably can't sing well at all.0