Early Folia (faster, 15th-16th century) and Late Folia (slower, 17th-18th century, popular in the Baroque era). Musical Characteristics
pattern, creating a feeling of constant movement between tonic (minor) and relative major.
Arcangelo Corelli’s Violin Sonata Op. 5, No. 12 (1700) is the most famous Baroque example, setting the standard for the form.
It is the ultimate "theme and variations" form; over 150 composers have written their own interpretations, using the strict chordal framework to showcase improvisational skill.