||Concerto in D coll’accompagnamento di tutta l’orchestra/Concerto pour Piano Forte acompagné de 2 Violons, Alto, Basse, Flute, 2 Hautbois, 2 Cors, 2 Bassons, Trompettes et Timbales
||The autograph of this concerto has not been found, but copies of the first movement were discovered by Guido Adler at the end of the 19th century. In his article ‘Ein Satz eines unbekannten Klavierkonzertes von Beethoven’from 1888, Adler describes this discovery in detail. The title on the cover of the orchestral parts ‘Concert D dur für Pianoforte mit Orchestra von L. v. Beethoven’, along with the title on the cover of the piano part ‘Beethoven Concert in D dur/ J. B.’, a formal analysis and the Prague origin of the manuscripts led Adler to the conclusion that the composition was an early Beethoven concerto. Therefore the movement was included in the complete edition of Beethoven‘s work by Breitkopf & Härtel. The authorship of the Piano Concerto in D major was corrected by Max Engel in the article ‘Der Angeblich Beethovensche Klavierkonzertsatz‘ (Supposed Concerto movement by Beethoven) in 1925. In the archive of the Publisher Joh. André, Offenbach a./M., Engel discovered fifteen instrument parts titled Concerto pour le Piano Forte, accompanied by 2 Violons, Alto, Basse, Flûte, 2 Hautbois, 2 Cors, 2 Bassons, Trompettes et Timbales composite par J Roessler ouvre 15, A Offenbach s / M chez J. André15. A copy of these parts, found in the Archive of the Gesellschaft der Musikfreunde in Wien, became the source for this edition.