Where this definition is strikingly different to many (but by no means all) other genres that is that the concept of an 'authorative version' is apparently deliberately omitted.
I can't think of any music in which there is an authorative version of anything; each classical piece is interpreted afresh with each performance and the mutabity of Pop Songs is part of the fun. Every recording I've got of Purcell's 3 Parts Upon a Ground in D is very different as to be unrecognisable from any other. And as for Jazz...