Magic Square of the Sun - ROBERT SEPEHR
https://youtu.be/wkkKRhv4itU
Stollen
This article is about the food. For the musical term, see Bar form.
https://en.wikipedia.org/wiki/Stollen
Bar form (German: die Barform or der Bar) is a musical form of the pattern AAB.
https://en.wikipedia.org/wiki/Bar_form
The term comes from the rigorous terminology of the Meistersinger guilds of the 15th to 18th century who used it to refer to their songs and the songs of the predecessors, the minnesingers of the 12th to 14th century. In their work, a Bar is not a single stanza (which they called a Liet or Gesätz); rather, it is the whole song. The word Bar is most likely a shortening of Barat, denoting a skillful thrust in fencing. The term was used to refer to a particularly artful song – the type one composes in songwriters' guilds.
The AAB pattern does, however, describe each stanza in a Meistersinger's Bar, which is divided into two Stollen (A), which are collectively termed the Aufgesang, followed by an Abgesang. The musical form thus contains two repetitions of one melody (Stollen – 'stanzas') followed by a different melody (Abgesang – 'aftersong'). One such tune (Ton in Meistersinger terminology) by Hans Folz (c1437–1513) illustrates this:
Vielchenweise.svg
Note that the B section is not necessarily the same length as each A section. The B section can also incorporate parts of the A section's phrase: in the above example, the final 14 notes of the B section match the final 14 notes of each A section (see also Rundkanzone). In this example, the 17 never-repeated notes starting the B section would have been called a Steg by the Meistersingers: literally, "bridge"; whence comes the term for a contrasting section in popular music.