# Questions tagged [intervals]

For questions centered around the ideas about and classification of distances between two pitch.

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### Is it true that “The augmented fourth (A4) and the diminished fifth (d5) are the only aug and dim intervals that appear in diatonic scales”

According to a source that I found, A4 & d5 are 2 types of tritones, and there are 1 or 2 tritones in a diatonic scale, depending on the definition. I cannot see how A4 and d5 are the only 2 ...
712 views

### What's the point of interval inversion?

The rules for inverting intervals are well documented (for example on Wikipedia), but I'm having a hard time figuring out why this operation is of interest: How does interval inversion help us in ...
220 views

### Is there a way of measuring the distance between notes indepedently of tuning? [closed]

I am trying to understand how much of music theory can be done independently of a specific tuning system. In equal temperament, all semitones have the same size, but that is not the case in other ...
319 views

### Perfect 4th is dissonant?

Why is the perfect fourth dissonant in some cases when it does not sound dissonant? When I play it in closed position, it does not sound dissonant at all. When I play it as a compound interval, I ...
2k views

### Identifying the interval from A♭ to D♯

This is a very theoretical question but it's confusing me a little. So intervals overlap - That's why I can call a major 3rd a diminished 4th, and such. However, from what I understand, a perfect ...
563 views

### what does the apostrophe mean in this notation?

Found this whilst reading some basic theory on wikipedia, but am trying to figure out what the supposed meaning is. example: b-c' kleine secunde 16:15 source: Wikipedia link with interval table ( ...
107 views

### Having learnt all the intervals by ear, how does one learn whole melodies? [duplicate]

This might seem like an easy step, but having learned how to recognise all the intervals upto an octave: ascending, descending and harmonically, how does one figure out a melody by ear? I can pick out ...
497 views

### Tritone or Minor 2nd as the most dissonant interval?

I'm trying to establish which interval is more dissonant, the tritone or the minor 2nd. Both are obviously very dissonant intervals. Math seems to prove that a minor 2nd should sound more consonant ...
67 views

### Why are consecutive P4s okay to use while P1s, P5s, P8s are not?

Consecutive P1s, P5s, and P8s are not okay to be used while P4s are allowed. What's the reason?
90 views

### How can I construct the E7 only with theory?

I have a hard time with the following description of what a E7 consists of: What does the intervall relate to here? I try to apply it to the Notes (Töne) above it (E B d gis b e`) but that can't fit....
6k views

### Is the tritone (A4 / d5 / DA3 / Dd6) still banned in Roman Catholic music?

The tritone is one of the most dissonant intervals in music. It is also known as the "Augmented 4th", "Diminished 5th", "Doubly Augmented 3rd" or "Doubly Diminished 6th", and it is composed of three ...
99 views

### Is a doubly augmented seventh a compound interval?

I'm reading about the theory behind intervals, and Wikipedia says: A compound interval is an interval spanning more than one octave. Does "spanning" in this case refer to the number of staff ...
157 views

### Term for distinguishing dim/perfect/aug intervals from dim/min/maj/aug ones

There are two types of intervals, distinguished by their possible qualities: Unisons, fourths, fifths, and octaves (and their compound variants) may be of perfect or (multiply) diminished/augmented ...
454 views

### Why do 7 chords use minor 7th while 6 chords use major 6ths?

If you play the chord C7, you would play the root, major third, fifth, and minor seventh (C - E - G - B♭), but if you play C6, you play the root, major third, fifth, and major sixth (C - E - G - ...
159 views

### Why is the interval between C# and F a diminished 4th?

Wouldn't it be the major third as well?
337 views

### How to properly unresolve melodies to achieve dissonance and darkness in music [closed]

I'm looking to understand music theory behind dissonance, unresolved dark music. What makes a song sound serious and not "rainbows". When writing a bassline or melodies, is it possible to achieve ...
239 views

### Classification of 9th, 11th, and 13th intervals by consonance and dissonance

An interval is classified by its consonance or dissonance: as an open consonance (unison, perfect fifth, octave), a soft consonance (major and minor third and sixth), mild dissonance (major second ...
501 views

### Why do we start from the bottom note when counting intervals?

Say if I play G to C descending, my intuition tells me to start from the note that came first. But I've been told that's not correct. You start from the bass note and count up no matter what.
1k views

### Confused about intervals and keys, does the former depends on the latter?

Sorry if my question is too trivial, I'm trying to understand intervals and keys. I've read on Wikipedia that a third "is a musical interval encompassing three staff positions and the major third is a ...
2k views

### Which are all the musical intervals that are valid?

I have been reading around many sources, but it seems there is not a full standardized way in naming intervals, some sources say that such a thing as a diminished first exist. So I started making an ...
1k views

### How do I aurally differentiate the tritone, min 6th and major 7th intervals?

I have made good progress in identifying most ascending intervals up to the octave, but am really struggling with the tritone, min 6th and maj 7th. All three sound dissonant and very similar. Is ...
54 views

### Statistics about the frequency of different type of intervals

Do you know if any statistics about the frequency of different type of intervals in music (of a certain period or by a specific composer) exist? For instance, suppose you have this piece of music in ...
403 views

### Melody And Intervals [closed]

How do composers think about intervals like minor, major,etc to compose melody? Eg I know playing major third will invoke happy mood....that is if we play C and then E creates happier environment......
130 views

### Melodic Criticism - Exercise 3.16G, Laitz The Complete Musician 2nd Edition

The question asks to find the weaknesses or problems (based on the general guidelines for melody writing presented in the preceding section) in the following melodic contour (tunes without rhythm or ...
906 views

### Transcribing as music and relative pitch practice?

I've read some good transcriptions recently and watched transcribe videos from 8-Bit Music Theory on YouTube and I was thinking if it's considered to be a good relative-pitch / interval / music ...
440 views

### Lower interval limits

I've heard about this concept of lower interval limits: An arbitrary limit to how low any given pattern of harmonic intervals can be played before it starts to sound muddy. It generally predicts that ...
111 views

### Diminished Intervals - does a double diminished interval exist?

I'm doing practise questions for an upcoming test, and I have to name an interval from E to G double flat. Would that be a double diminished third? I'm not sure what to call it. Also if I invert it ...
61 views

### Harmonic/Melodic Minor in Keys? [duplicate]

How does one find the key to a scale like harmonic minor, or is out of key?
588 views

### How to determine if an interval is enharmonic or not

I'm new to music theory, and reading through the basics I learned about interval classifications. But, along with that many questions came to my head. The one I want to ask today is the following: ...
258 views

### Does melody note function change with each chord change in a certain harmonic field?

Lets say the root is G. The chord progression starts with a G minor chord (Tonic) and is in Aeolian mode. Perfect fifth of it is D. etc.. Does a chord change change the function of the original ...
723 views

### For intervals, is three semitones major or minor?

It should be a pretty simple question, but under a bit of exam stress I have forgotten. As the title says, is three semitones a major or minor interval?
160 views

### Interval analysis, augmented 5th or a 6th?

I am doing interval analysis as I am writing a countersubject(working on the harmony for it right now). But I have a bit of trouble here. I have 3 note choices for any given quarter note. The spot I ...
206 views

### Why the interval of 2 tones is called the third?

Why is the interval of 2 tones called a third? Indeed, the distance from note C to note E is 2 whole segments, and if we subtract 3 - 1 we get 2. In Russian each interval has its own name, not an ...
6k views

### Etymology of word “Octave”

How come the etymology of the word octave is related to the number eight, when the numbers that you would associate with the meaning of the word are either two – doubling of the frequency – , or ...
105 views

### How to define “simple” when considering consonance and interval ratios

My understanding is 'simple' ratios for intervals are considered acoustically consonant and this is often used to explain is considered musically consonant. So, a unison 1:1 (1.000) is simple - it's ...
1k views

### Intervals: Diminished unison?

I am learning level 8 theory. There was an exercise where I had to write each interval below the given note. The interval given was a diminished 1. In general, how would I solve this? Here is a ...
217 views

### Perfect fourth is dissonant when there's no note below it?

According to Walter Piston's Harmony book, a perfect fourth is dissonant if there's no tone below its lower tone, while it's consonant if there's a third or a perfect fifth below the interval. In that ...
76 views

### Writing specific intervals

Is my answer the following question is correct: Q: What is the augmented seventh from E? A: D double sharp Method Write down the note (of your choosing) on the bottom line of the treble ...
240 views

### Open interval (Does such a term exist?)

In a book on jazz harmony in Russian I have noticed the term 'open interval'. Example 57 says that interval -9 in the right arrangement is 'open interval' (in this case it's bad). The left arrangement ...
125 views

### How does one measure the interval between two pitches?

What is the procedure for measuring the interval between two pitches? How do I know if something is a fifth, sixth, or something else? Why, for instance, is C to D a second even though we only go up ...
731 views

### Confusion in naming intervals

If I play C E G on the piano, then G acts as a perfect 5th, but if I play G C E and the lowest note (just below the C) is G, can I still call G a perfect 5th of C maj? Because the interval now between ...
61 views

### Inversionally equivalent pc sets relation with transposition

So, I'm reading Allen Forte's Structure of Atonal Music and in the sub-chapter 1.4 Inversionally equivalent pc sets he affirms: It is important to observe that whereas transposition does not imply ...
134 views

### Can an interval have a direction, low to high, high to low?

Is there a word or way to know if an interval is going from a low note to a high note? "Minor second" doesn't tell me if it's going from a low note to a high note for example.
181 views

### Is interval always related to a scale?

Is music interval always a concept in terms of scales and do we always have to take the first note as tonic? What would be the interval between D note and E note in C major scale?
2k views

### What are the interval patterns for the modes?

I came across this on this site: C Ionian is C D E F G A B, whereas C Dorian is C D E♭ F G A B♭ The WWHWWWH is for Ionian. What is the equivalent for the other modes?
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What is the musical term for an amended ending where the leading note is flattened and then resolves to the correct leading note? For example, a piece in C Major ends with a Perfect cadence, where the ...
126 views

### Explaining DADA to EGBG (and in the other direction) in theoretical terms

Please can you help me describe the transition between these two sets of notes in theoretical terms: DADA (For clarity, on the guitar: open D string, g string 2nd fret, b string 3rd fret, e string ...
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### Interval song for a Perfect 4th where the note ascended to is not the tonic?

I've been trying to develop my relative pitch, and I've seen the suggestion of using "interval songs". This makes sense to me, but I've noticed something about every song I've seen suggested for the ...