We can use anybody who can manage anything near the tenor range - most of our basses are the basso-profundo type and they complain bitterly when they have to sing baritone. I sometimes wind up singing tenor in a pinch, but I don't like to because it contracts my upper range if I do it too much (I'm a true contralto with a range from about D3 to (sometimes) F5.)
My old high school chorus teacher hoped I would become a show singer someday...alas other priorities...think Gordon McCrae (Oh what a beautiful mornin’...oh what a beautiful day) and that is my range though I can handle all the Messiah bass parts(when I’m fortunate enough to be a part of a choir that’s singing it during the Christmas or Easter seasons). When I’m warmed up and singing in a small group I can manage a decent sotto voce and squelch the vibrato when I need to.
Legato, legato... May God keep you connected and smoothly flowing in his Spirit, American Mother!