What is the definition of classical singing? When people refer to themselves as singing using classical technique what do they mean?
Classical singing is usually referring to the idea of choral works performed in a classical style. We wouldn't consider Bruno Mars to be a classical singer, for example. Not even Elvis. Opera, I believe, is another area of classical singing. Classical singing generally has a strong emphasis on homogenous technique and tone, where modern/contemporary styles tend to eschew those values, instead going for whatever works. Classical singing also tends to be accompanied by classical music, unsurprisingly. If you grab a group of ten classical singers of the same voice type and ask them to sing the same thing, it should be hard to tell them apart. Ten pop singers w(sh)ould not sound so identical.