The small piano pieces published here can be divided into two groups. Some of them were composed by Mozart himself between the ages of 6 and 8 years. Others are to be found in booklets, known as the Notenbüchlein, compiled by Mozart's father Leopold Mozart for his children Wolfgang and Marianne (''Nannerl''), and the composers names are not given. In any case, they must have been by German masters living in the mid-18th century.

Audio performances by István Dominkó, artist and piano teacher are available in the digital edition.

This publication is printed on high-quality, age-resistant paper that is produced in an environmentally-friendly, climate-neutral manner using renewable raw materials.