London Sketchbook (Mozart)

The set of works is denoted by its K6 number, followed by its respective letter, i.e. 15a, 15b, 15c, etc.

According to the Neue Mozart-Ausgabe, the intended purpose of this book was not for musical exercise, as once thought, but rather for the young Mozart, who had just learned how to use pen and ink, to write down his own inspiration without needing anyone's help.

45, Erik Smith orchestrated nearly all of the pieces here for winds and orchestra.

With his orchestration he also grouped several pieces together to create a full, multiple-movement work.

For example, he arranged K. 15b, a, and f as a single divertimento in C. Hans-Udo Kreuels also did a recording of the Sketchbook in 2003, as well as completing two of the fragmented works, K.15rr, and 15ss.