"851717"^^ . . . . "1099554220"^^ . . . . . . . . . . "In music theory, an enharmonic scale is \"an [imaginary] gradual progression by quarter tones\" or any \"[musical] scale proceeding by quarter tones\". The enharmonic scale uses dieses (divisions) nonexistent on most keyboards, since modern standard keyboards have only half-tone dieses. More broadly, an enharmonic scale is a scale in which (using standard notation) there is no exact equivalence between a sharpened note and the flattened note it is enharmonically related to, such as in the quarter tone scale. As an example, F\u266F and G\u266D are equivalent in a chromatic scale (the same sound is spelled differently), but they are different sounds in an enharmonic scale. See: musical tuning. Musical keyboards which distinguish between enharmonic notes are called by some modern scholars enharmonic keyboards. (The enharmonic genus, a tetrachord with roots in early Greek music, is only loosely related to enharmonic scales.) Consider a scale constructed through Pythagorean tuning. A Pythagorean scale can be constructed \"upwards\" by wrapping a chain of perfect fifths around an octave, but it can also be constructed \"downwards\" by wrapping a chain of perfect fourths around the same octave. By juxtaposing these two slightly different scales, it is possible to create an enharmonic scale. The following Pythagorean scale is enharmonic: In the above scale the following pairs of notes are said to be enharmonic: \n* C\u266F and D\u266D \n* D\u266F and E\u266D \n* F\u266F and G\u266D \n* G\u266F and A\u266D \n* A\u266F and B\u266D In this example, natural notes are sharpened by multiplying its frequency ratio by 256:243 (called a limma), and a natural note is flattened by multiplying its ratio by 243:256. A pair of enharmonic notes are separated by a Pythagorean comma, which is equal to 531441:524288 (about 23.46 cents)."@en . . "Enharmonic scale"@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . "5344"^^ . . . . . . "In music theory, an enharmonic scale is \"an [imaginary] gradual progression by quarter tones\" or any \"[musical] scale proceeding by quarter tones\". The enharmonic scale uses dieses (divisions) nonexistent on most keyboards, since modern standard keyboards have only half-tone dieses. Musical keyboards which distinguish between enharmonic notes are called by some modern scholars enharmonic keyboards. (The enharmonic genus, a tetrachord with roots in early Greek music, is only loosely related to enharmonic scales.) The following Pythagorean scale is enharmonic:"@en . . . . . .