This collection contained over 270 autographs and included the operas The Marriage of Figaro and The Magic Flute, a series of string quartets and string quintets, several piano concertos, and Eine kleine Nachtmusik. Based on these autographs, the André publishing house (founded in 1774 by André's father Johann André (1741–99) and still owned by the family today) prepared and issued some highly respected editions of Mozart's works, bringing many compositions into print for the first time.
The collection comprised over 270 autographs and featured operas like The Marriage of Figaro and The Magic Flute, string quartets and quintets, piano concertos, and Eine kleine Nachtmusik. Based on these autographs, the André publishing house (founded in 1774 by André's father Johann André (1741–99) and still owned by the family today) prepared and issued some highly regarded editions of Mozart’s works, making many compositions accessible for the first time.