1. 
   Tessitura
   In music, the term tessitura (plural tessiture; Italian, meaning "texture", and from the same Latin word: textura) generally describes the most musically acceptable and comfortable range for a given singer or, less frequently, musical instrument; the range in which a given type of voice presents it...
   Found op http://en.wikipedia.org/wiki/Tessitura
   
   
2. 
   tessitura
   where a melody is located within a given vocal register (e.g. high in the soprano range); also, where a melody spends most of its time within its overall range. Tessitura can be high, medium or low.
   Found op http://people.vanderbilt.edu/~cynthia.cyrus/ORB/orbgloss.htm
   
   
3. 
   tessitura
   (Italian: `texture`), in music, the general range of pitches found in a melody or vocal part. It differs from the compass of a piece to the extent ...
   Found op http://www.britannica.com/eb/a-z/t/29
   
   
4. 
   Tessitura
   The average range of a particular role, i.e., the tessitura of the Queen of the Night in Mozart
   Found op http://www.greensboroopera.org/oft-education.shtml
   
   
5. 
   Tessitura
   [software] Tessitura is an enterprise application used by performing arts and cultural organisations to manage their activities in ticketing, fundraising, customer relationship management, and marketing. It refers to itself as "arts enterprise software". ==History and Business model== Tessit...
   Found op http://en.wikipedia.org/wiki/Tessitura_(software)
   
   
6. 
   Tessitura
   The range of an instrumental or a vocal part.
   Found op http://www.classicalworks.com/html/glossary.html
   
   
7. 
   tessitura
   the 'best' or most comfortable pitch range, generally used to identify the most prominent / common vocal range within a piece of music
   Found op http://en.wikipedia.org/wiki/Glossary_of_musical_terminology
   
   

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