For example, in a woman with a 21-day cycle, the follicular phase is likely seven days; in a woman with a 35-day cycle, the follicular phase is likely twenty-one days. (Note: It is possible for a luteal phase defect to shorten the length of the menstrual cycle â this will be discussed in a future article on Phase II.
The diatonic scales. The diatonic scale is most familiar as the major scale or the natural minor scale (or aeolian mode). The diatonic scale is a very important scale. Out of all the possible seven note scales it has the highest number of consonant intervals, and the greatest number of major and minor triads.he diatonic scale is a very important scale. Out of all the possible seven note scales it has the highest number of consonant intervals, and the greatest number of major and minor triads.
The two primary pentatonic scales in common use are referred to as the major pentatonic scale and the minor pentatonic scale. Referring to the major diatonic scale as our reference point, the major pentatonic scale is composed of the 1st, 2nd, 3rd, 5th, and 6th degrees (or do-re-mi-sol-la as Doc put it). The minor pentatonic scale would be the 1st, flat-3rd, 4th, 5th, and flat-7th degrees. Views Â· View Upvotes.