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20

D-D is unison (or "prime") Db-D or D-D# is augmented prime and Db-D# is a double augmented unison or prime. P.S. This is really something different than the enharmonic variants Db-Eb, but that was not the question.


20

In classical theory, the necessity or lack thereof of a particular chord member is generally determined by the note's tendency to lead to another note. That tendency comes most often from the interval of an augmented fourth or diminished fifth. Enharmonically, those intervals are the same, but in context, they are not, and they resolve differently. In a ...


15

The technical term for the scale seems to be the Minor "Gypsy" Scale and it is also known as the Flamenco Mode. The basic idea is it is a combination of two Phrygian Dominant tetrachords, or a Phrygian Dominant with a Major 7th scale degree. Here are the links that show both scales match the pattern above and includes the root scale of it the Phrygian ...


15

The reason there are multiple names for notes is that the same note may function differently in different contexts. If you just play a single note with no context, then it could have a multitude of different names. For example if you played the note in between F and G you could call it F# or Gb or more obscurely E## or Abbb. They are all valid names and are ...


14

A chord does not have to be made up of thirds. A chord is by definition two or more notes heard as if sounded simultaneously. Not all chords have three notes either. There are dyads (two notes), triads (three), tetrachords (four), pentachords (five), and hexachords (six). There's no limit on the number of notes, and also, by definition, there's no limits on ...


14

No, they are not considered consonant in all music cultures. The perception of consonance and dissonance can be different among cultures. The same interval can be perceived (and labeled) differently by different cultures. This is influenced by many factors (and the harmonic series is not the only one!) For example, in medieval times major thirds were ...


12

In classical Western music theory, each diatonic scale contains seven notes, and each of the notes must be assigned a different note name. (So one also does not write CX for the D in the C major scale.) In non-equal temperament, C# and Db may in fact be two different pitches, and a diatonic scale that contains a C must not also contain a C#. In more ...


12

Well, first of all, a unison is an interval ; as such, it makes sense to want to designate is, as you would do with any concept. Especially as it is used in real life. You sometime play with other people. In an orchestra, for example, chords are usually played across several parts. Several parts could very well be playing the same note in a chord, and you ...


12

Well, without any further context there is no possible distinction between a minor third and an augmented second as they are indeed the same note, technically. However, the phrases minor third and augmented second make reference not only to that space of three semitones, but also to the relationship that this interval plays within a given chord or scale. ...


11

There is exactly one note that is a diminished 3rd above Db: Fb. Db to Eb is not a diminished third, it is a major second. Those comments are wrong. This question explains the difference between two enharmonically equivalent notes.


11

Well, a musical chord is by definition a collection of two or more notes sounding simultaneously. So, mathematically, in the usually used 12-tone pitch system of Western/pop/jazz music, there are 2^11 - 1 = 2047 different possible combinations of pitch classes modulo transposition (2^11 is the number of ways additional tones can be added once you fix a root ...


11

Yes. A dissonance is an unstable sound - two or more tones sounding together that demand a resolution towards a consonance, which is a stable sound. "Resolving" a dissonant interval means that it is followed up by a consonant interval. Consonances are divided into perfect and imperfect ones. Perfect consonant intervals are most stable; they are the ...


11

There are four types of perfect interval: perfect unison, perfect fourth, perfect fifth, and perfect octave. These can be thought of as belonging to two groups. In the first group, all intervals of a unison or an octave are called perfect because the note is not changed. An octave is twice (or half) the frequency of the first note. The second group ...


10

Sure, chords can contain major and minor thirds at the same time! We see 'em all the time in jazz. I call it a major-minor chord (which however is quite different from a major-minor seventh chord). It's also called a mixed-third chord. In jazz chords you will also sometimes see it notated as a ♯9 instead of as a ♭3, though that implies a slightly different ...


10

A major triad does not contain "a minor third followed by a major third" and a minor triad does not contain "a major third followed by a major third". A major triad contains the root, major third, fifth. A minor triad contains the root, minor third, fifth. Or, counting in semitones: Major triad: root, root + 4, root + 7 Minor triad: root, root + 3, ...


10

You are looking at the chords in an interesting way, but you are over complicating the subject a lot and have a few slight misconceptions. I to V or i to V is a very normal chord movement and it is quite strong, but the the opposite is much stronger i.e. V to I or V to i. The movement is so strong at the end of a phrase the movement is known as an authentic ...


10

My answer builds on the answer contributed by DR6. Based on your reaction to other very good answers posted here already, your question seems to boil down to: "Why do humans innately feel that certain intervals are consonant". And so much so that they are willing to call them "perfect". Before getting to that question, let's look at why Western culture ...


10

Chord naming and interval naming are two pretty different things -- for example, your Db-F#-A-C chord's name would more likely focus on the F#, since you create a minor triad between F#-A-Db(C#). That's all highly contextual, and talking about prime or octave intervals in chord context is extremely rare. For the interval naming question, my understanding ...


8

What I am going to write below is just simple jazz harmony fundamentals, and should naturally be considered as school stuff ! You have to understand the role of each voice in a chord, to define what should be played, and what can be omitted. Mandatory voices The root note defines the root of the chord, and must be played globally. I mean, if you have a ...


8

Other, better music theory people than me should give their opinion on this, but here's my thought: In certain cases, the proper name of a chord can depend on its function in the chord progression where you find it. In other words, a certain group of notes in a certain voicing in one key and chord progression would properly be named differently if found in ...


8

A key thing to keep in mind is that technically a minor 3rd and an augmented 2nd are different pitches (have different notional fundamental frequencies), at least in anything other than equal temperament. In just intonation, these two pitches differ by approximately 40 cents (list of intervals), enough to make a perceptable difference in the degree of ...


7

I can think of at least one example where I encountered a C and C# conjoined. In Béla Bartók's Nine Little Piano Pieces, you'll find them in the Menuetto from measure 10 on. It would be natural to find more of these in Bartók, especially the pieces using polytonality. Other composers using polytonality like Stravinsky should also have them. So, look for ...


7

The augmented 4th / diminished 5th (aka tritone) is the furthest (enharmonic) note away both in terms of circle of fifths and shared harmonics so it is a very "distant" note.


7

Fux does allow them in counterpoint. As I pointed out in one of my comments, confusion comes from voice-relationships: A minor-sixth is of course allowable between two voices because it is an imperfect consonant interval. A minor-sixth is not allowable within the same voice because it is a leap greater than a perfect-fifth and is therefore inexcusable ...


7

Maqam Suzidil (not a very Western name, but if you try to understand Turkish music, this might get you somewhere) says this and some other sites. Looks like they (Arabic, Persian, Turkish) have an interesting way of classifying the scales by decomposing them into (usually) tetrachords which all have their own "personality". I didn't explore this much but ...


7

Technically speaking, the answer is infinity for all intervals. This is because for any resonant harmonic of a fundamental, a harmonic exists at twice the frequency. There is an order in which these intervals appear, and that is easily found by looking at the harmonic series. You do need to know, of course, that the 12-tone equal temperament that we use ...


7

"Is there a solid definition of perfect intervals, lying around somewhere I just can't find?" Yes. A "perfect" interval is an interval that is not one of minor, major, diminished, augmented.


7

Since both of them are flat, it is the same interval they would be without flats. So: Bb - Eb would be the same as B - E which is perfect fourth. Bb - Ab would be the same as B - A which is minor 7th. Bb -Db would be the same as B - D which is minor 3rd.


6

An article by Joe Monzo at http://tonalsoft.com/enc/s/savart.aspx defines the savart as 1/300 of an octave. A savart is calculated as the 300th root of 2, or 2(1/300), with a ratio of approximately 1:1.002313162. It is an irrational number. A savart has an interval size of approximately 4 cents. savart = 1000log10(f2/f1) cents = 1200log2(f2/f1)


6

Personally, I prefer to call this aural skills phenomenon "absolute pitch," (AP) and only make use of the name "perfect pitch" when the level of skill is indeed at that point where it can not be distinguished from perfection. I was recently told that I should not always rely on my memory because it doesn't show as much "talent" as it would with a tuning ...



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