Simple Ternary Form
In ternary form each section is self-contained both thematically and tonally (that is, each section contains distinct and complete themes, and ends with an authentic cadence. The B section is generally in a contrasting but closely related key, usually a perfect fifth above or the parallel minor of the home key of the A section (V or i); however, in many works of the Classical period, the B section stays in tonic but has contrasting thematic material. It usually also has a contrasting character; for example section A might be stiff and formal while the contrasting B section would be melodious and flowing. Da capo arias are usually in simple ternary form.
Compound Ternary or Trio Form
In a trio form each section is a dance movement in binary form (two sub-sections which are each repeated) and a contrasting trio movement also in binary form with repeats. An example is the Minuet and Trio from the Haydn’s Surprise Symphony. The Minuet consists of one section (1A) which is repeated and a second section (1B) which is also repeated. The trio section follows the same format (2A repeated and 2B repeated). The complete Minuet is then played again at the end.
Ang Staff ay binubuo ng limang guhit at apat na espasyo.
LICHT (Light) is Karlheinz Stockhausen's epic 29-hour work for vocal, instrumental and electronic forces, composed over a period of 26 years (starting from 1977). It is divided into 7 operatic presentations, with each one named after a day of the week (Monday, Tuesday, etc). Though labelled "operas", practically speaking these staged productions have almost nothing in common with most traditional operas written in the last 200 years, and could even be viewed more accurately as thematically-linked, evening-length productions featuring electro-acoustic concert works driven by semi-narrative vocal elements.