This piece of music was probably Mozart's first composition. It is an extremely short piece, consisting of just 10 measures, and was notated by the composer's father, Leopold, as Wolfgang was only five years old when he composed it.

It is normally performed on the harpsichord and is in the key of C. The piece opens with a one-bar phrase in 3/4 time, which is then repeated. A second, modified phrase receives the same treatment. The time signature then changes to 2/4 and in the following four measures Mozart reverts to a typically Baroque style. The piece concludes with a simple authentic cadence.