The book contains simple short keyboard (typically harpsichord) pieces, suitable for beginners; there are many anonymous minuets, some works by Leopold, and a few works by other composers including Carl Philipp Emanuel Bach and the Austrian composer Georg Christoph Wagenseil.
Because of the simplicity of the pieces it contains, the book is often used to provide instruction to beginning piano players.
Over the course of the next four years or so, the notebook was gradually filled with pieces written out by Leopold and two or three anonymous Salzburg copyists.
It is believed that in its completed state the Notenbuch contained a total of 64 pieces (including exercises and unfinished compositions), of which 52 are in the surviving 36 pages of the book.
Numbers 58 and 61, thought to be in the four missing pages, are known only from Nissen's material; Plath assumed that these two pieces were copied out by Leopold, who was responsible for more than half the contents of the Notenbuch.
For example, number 48 is an arrangement of the third movement of Leopold's D major serenade, but the trio also appears as Menuet II in Wolfgang's Sonata K. 6.
[1] The earliest compositions by Wolfgang are written in Leopold's hand; the father's gentle suggestions for amendments came later.
It is normally performed on the harpsichord and is in the key of C. The piece opens with a one-bar phrase in 34 time, which is then repeated.
It is in rounded binary form, with repeat signs at the end of each of the sections: ||:A:||:BA:||, where A and B each consists of four bars.
Another short piece, of 18 measures, it was probably notated by his father, Leopold Mozart, since Wolfgang was five or six years old at the time.
In two-part harmony, it consists of 3 sections: the opening, a contrasting trio, and reprise of the original.
[Not in the score] A short piece (around a minute in length); it was probably notated by his father, Leopold, since Wolfgang was only five or six years old at the time.
In two part harmony, it consists of 3 sections: the opening, contrasting trio, and a reprise of the original.
A very short work (around a minute in length); it was most likely notated by his father, Leopold, as Wolfgang was only five or six years old at the time.
A very short, yet lively piece (around a minute in length); it was most likely notated by his father, Leopold, as Wolfgang was six years old at the time.
A short minuet (around a minute in length); it was most likely notated by his father, Leopold, as Wolfgang was six years old at the time.
Another short minuet, featuring triplets, the last in the Notenbuch; it was most likely notated by his father, Leopold, as Wolfgang was six years old at the time.
The final surviving piece in the Nannerl Notenbuch, of which only a fragment is left; notated again by Leopold.