The problem is not new, though. The article opens by mentioning a 1926 concert in which the choir asked the audience "If you sing tenor, please join us." The tenor range is relatively rare among men's voices. I'm a high tenor myself; I can routinely sing a G, and I can get up to an A if my voice is in good form. I think I managed a B♭ (Bb if HN strips out the ♭ (flat) Unicode character) once, but it was decades ago so I'm not sure if I'm remembering the arrangement correctly; and choral arrangers rarely ask tenors to sing a B flat since they know so few people can handle it. Pretty sure I've never been able to hit a C, though. (C5, that is; of course I can hit a middle C).

But tenors have been in short supply for decades and decades. Every single time I've tried out for a choir, when the choral director hears how high I can sing, I can see some sort of "tell" on his or her face. A smile, a widening of the eyes... I can sightread, too, so I know I'm a shoo-in for any choir (well, any amateur choir at least: I'm not a music professional and wouldn't be able to devote 20+ hours a week to a choir). But I suspect that even if I couldn't sightread at all and had to have my hand held for any new piece, choir directors would grab me anyway, just because of how high my voice can reach if I haven't been abusing it.