Composed by the German Baroque composer Johann Christian Schickhardt (c. 1682–1762) sometime around 1735,  L’Alphabet de la Musique, Op. 30 is a collection of 24 sonatas in all major and minor keys.

In total there are 6 volumes in which the 24 sonatas explores a different key, following a concept similar to J.S. Bach’s The Well-Tempered Clavier. Modern editions, such as those by Musica Rara/Breitkopf & Härtel, are usually published in six volumes, each containing four sonatas.

The sonatas are usually written for a solo woodwind instrument—most commonly the treble (alto) recorder, flute, or oboe—and basso continuo (often realized as cello and a keyboard instrument like piano or harpsichord).