Die Kunst der Verzierung im 18. Jahrhundert – Instrumentale und Vokale Musizierpraxis in Beispielen

Back in the day this was a wonderful exploration of sources from the Baroque, which exemplify different ornamentation styles.

Nowadays, we can find most of these examples on IMSLP. They are also in this database.

Vocal diminutions in Marin Mersenne's Harmonie Universelle

Marin Marais - 32 Variations on La Follia (IMSLP)