Mozart is believed to have written an oboe concerto for the Salzburg virtuoso Giuseppe Ferlendis in 1777. The work was considered lost until 1920, when Bernhard Paumgartner discovered a copy of the parts that must have been written shortly before Mozart's death. Nevertheless, this copy proved to be much more unreliable than the copy of the parts of the flute concerto. Every source-critical edition must take these parts into consideration, as there is otherwise no extant source material aside fro...