The natural scale is na�vely the Planck scale so this small value could be seen as another form of fine-tuning ( called a hierarchy problem ) : the energy density given by the scalar potential is down by 10 & minus; 12 compared to the Planck density.
22.
These scale tones may replace the natural scale tones, or they may be added to the scale, as in the case of the minor blues scale, in which the flattened third replaces the natural third, the flattened seventh replaces the natural seventh and the flattened fifth is added between the natural fourth and natural fifth.
23.
Sometimes cantors also use transcriptions into Western or Kievan staff notation while adding non-notatable embellishment material from memory and " sliding " into the natural scales from experience, but even concerning modern neume editions since the reform of Chrysanthos a lot of details are only known from an oral tradition related to traditional masters and their experience.
24.
This is called cross fingering, and in some instruments is used to produce the'sharps and flats'missing from their natural scales . " In the Baroque period cross-fingering improved, allowing music in an increasing variety of keys, but in the Classical and Romantic periods flute design changes such as larger tone holes made cross-fingering less practical while keywork increasingly provided an easy alternative to playing chromatic notes without cross-fingerings.
