In Beethoven's work, however, there should not be any additional ornament added from a performer. Even in Mozart's compositions, there is no ornament that come from outside of the score are allowed, as Brown explains: "Most of the chamber music from Mozart onwards that still remains in the repertoire belongs to the kind in which every note is thought out' and which tolerates virtually no ornamental additions of the type under consideration here..." Recent scholarship has however brought this statement in question.