"He studied first as a baritone and after a few years of daily, arduous work, became a tenor; but he preserved that baritonal color and strength ... The effect is staggering. One remains agape at, say, the ease with which he pops out the nine high Cs in Tonio's aria from La fille du régiment and later sings the "Largo al factotum", sounding like a fine, agile, burnished baritone ... Spyres is a baritone in baritone roles and a tenor in tenor roles. Or baritenor, if you can grasp the concept ... Is all of the singing perfect? No, but it's close - there's a squeezed high note here and there ... but it's easy to forgive".