Decimal Notation. 1  Naming a Decimal. Among all fractions there is a collection of special fractions called decimal fractions. 2  Changing From Fractions to Decimals. To change a fraction to a decimal, we count the number of zeros in the denominator. 3  Converting Decimals to Fractions.
Sinfonia. Sinfonia is the Italian word for symphony. In English it most commonly refers to a 17th-or 18th-century orchestral piece used as an introduction, interlude, or postlude to an opera, oratorio, cantata, or suite.It has also sometimes been used for other types of music.n English it most commonly refers to a 17th-or 18th-century orchestral piece used as an introduction, interlude, or postlude to an opera, oratorio, cantata, or suite. It has also sometimes been used for other types of music.
In music, an invention is a short composition (usually for a keyboard instrument) with two-part counterpoint. (Compositions in the same style as an invention but using three-part counterpoint are known as sinfonias.nventions are similar in style to a fugue, though they are much simpler. They consist of a short exposition, a longer development, and, sometimes, a short recapitulation. The key difference is that inventions do not generally contain an answer to the subject in the dominant key, whereas the fugue does.