Do beginner tenors ussually start doing exercices in some kind of mezza voce or full voice? Some say that tenors do not begin learning to sing well by using full voice immediately. Some say that full voice (con la fronte?) takes time to learn. You cannot start with that I am being told. Some people do not even talk about this. I guesd they think it us very natural for a beginner not to use his full voice yet.
It's not exactly healthy for beginning tenors to even think about "full" vs. "mezza voce." Young singers are better off taking the bel canto approach, which simply encourages healthy, natural vocal production backed by technically correct breathing. Without this fundamental approach full and mezza voce singing will be incorrect.