Steam heat?

Tenor Vittorio Grigolo, easy on the eyes despite the fright wig, is one of the “Hottest Opera Stars Of 2013” according to Huffington Post. But does he meet the criteria of the highest authority on hotness of them all, namely the parterre consensus?

So you tell me, cher public, which of the ardent artistes on this list do you agree belong in the top echelon of calidity, and which other singers you would promote to populate the Torrid Ten?