Forms consisting of three parts:
an opening section, including the main themes, part B develops those themes,
and a closing A (or a modified A') section. This form of a reprising A
section is a typical poetic form from ancient
and 12th century minesienger
songs and the opera song - the aria da capo.
In the sonata
in which symphonies
and sonatas are written, the minuet
movement is also written as a ternary form
Ternary structures are also found
among 19th century piano
pieces, such as Mendelssohn's
"Songs Without Words"
and the nocturnes
and in the slow movements of many Classical sonatas,