A ballett was the English form of the Italian balletto, a light, homophonic, strophic song for three or more singers, distinguished by dance-like rhythms and "fa-la-la" refrains.
It is based on an Italian madrigal, published by Gastoldi in 1591 (see ref 1 and supporting recording).
The song was parodied by Peter Schickele (https://www.schickele.com/composition/twomadrigals.htm) (writing as P.D.Q.
Bach) as: The ballett is of form AABB and is in mode 7, the Mixolydian.
[citation needed] Phillip Ledger (ed) The Oxford Book of English Madrigals (1978) Oxford University Press, and co-issued recording, by Pro Cantione Antiqua