Editing Upper structure (section)

==Shorthand notation==

Common jazz parlance refers to upper structures by way of the interval between the root of the bottom chord and the root of the triad juxtaposed above it.<ref name="Levine">"The Jazz Piano Book". Mark Levine. (1989). Petaluma, CA: Chapter Fourteen - ''Upper Structures'' pages 109-124</ref> For instance, in example one above (C<sup>7{{music|#}}9</sup>) the triad of E{{music|b}} major is a (compound) minor 3rd away from C (root of the bottom chord). Thus, this upper structure can be called ''upper structure flat three'', or '''US{{music|b}}III''' for short.  

Other possible upper structures are: 

*'''USII''' – e.g. D major over C<sup>7</sup>, resulting in C<sup>13{{music|#}}11</sup>
*'''US{{music|b}}V''' – e.g. G{{music|b}} major over C<sup>7</sup>, resulting in C<sup>7{{music|b}}9{{music|#}}11</sup>
*'''US{{music|b}}VI''' – e.g. A{{music|b}} major over C<sup>7</sup>, resulting in C<sup>7{{music|#}}9{{music|b}}13</sup>
*'''USVI''' – e.g. A major over C<sup>7</sup>, resulting in C<sup>13{{music|b}}9</sup>
*'''USi''' – e.g. C minor over C<sup>7</sup>, resulting in C<sup>7{{music|#}}9</sup>
*'''US{{music|b}}ii''' – e.g. D{{music|b}} minor over C<sup>7</sup>, resulting in C<sup>7{{music|b}}9{{music|b}}13</sup>
*'''US{{music|b}}iii''' – e.g. E{{music|b}} minor over C<sup>7</sup>, resulting in C<sup>7{{music|#}}9{{music|#}}11</sup>

The second item in the list above (C<sup>7{{music|b}}9{{music|#}}11</sup>) has a related version called ''upper structure sharp four minor''--with the written shorthand '''US{{music|#}}iv'''--created with an F{{music|#}} minor triad. (See "Example 2" above.)