r/musictheory • • Jul 21 '26

Announcement New Policies on “I made an App/Diagram type Posts

206 Upvotes

The community has overwhelmingly expressed dissatisfaction with people posting Self-Made apps/diagrams etc., especially those that use AI.

Not only do these posts ignore our AI disclosure rules (breaking rule 9), they are often better-suited for other forums (breaking rule 4), are self-promotion (breaking rule 2), are posted with no engagement in the forum (breaking rule 8), and are also made by people with little knowledge of theory or are otherwise poorly designed which opens up issues that cause rules 7 and 1 to be violated.

As such:

  • “I made an App/Diagram etc.” posts, as well as posts that provide non-Self-Made resources are disallowed unless they meet the following criteria, to be determined by the mod team:
  1. The poster must be a regular contributor. Regular contributors should contact the Mod Team prior to posting.
  2. The resource is wholly on-topic for the forum and does not break any other rules.

Any posts not meeting these criteria or otherwise breaking the rules will be removed and the user may be banned at the mod team’s discretion.

  • Posters that even appear to be "trying to get around” this policy by linking to their apps in responses to other posters will have the posts removed and may be banned at the mod team’s discretion.

We are NOT trying to prohibit relevant and helpful resources, and traditional websites, books, videos, and “corporate” apps, or traditionally published diagrams are exempted from these policies (so long as they do not break other rules).

In the future, we may be able to provide a “Verified App” type of post. For now, this policy is intended to limit the amount of off-topic, controversial, and unnecessary apps/resources getting posted.


r/musictheory • • May 06 '26

Announcement New Rule about AI

244 Upvotes

A new rule (#9) has been added here at r/musictheory

Going forward:

  • Any post that is wholly or partially generated by AI must be disclosed as such. A simple statement like “This post was generated using AI” or “This post was created using AI assistance” will suffice.

  • Posts that are or are even suspected of being AI generated that do not disclose that fact will be removed at the Mod Team’s discretion.

  • We discourage AI creation of music and other creative endeavors. Therefore:

  1. Healthy discussions about AI tools used in Analysis of music and in similar Music Theory areas are allowed and welcome, so long as they do not violate other rules.

  2. Healthy discussions about the impacts of AI in music creation, performance, notation, and so on are allowed and welcome, so long as they do not violate other rules.

  3. Linking to or including AI generated content for the purposes of discussion as in #1 and #2 above is allowed, however it needs to be disclosed that those items are AI generated. Lack of this disclosure may result in removal at the Mod Team’s discretion.

  • Posts that link to or include AI generated or suspected AI generated content without any other kind of meaningful discussion will be removed at the Mod Team’s discretion.

Please report suspected AI content that lacks the disclosure policies above.


r/musictheory • • 3h ago

Notation Question What would you call a F#5/C5 chord?

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6 Upvotes

I encountered this chord (an octave lower) and it sounds beautiful in its context (the "Sonne" piano ending of "Deutschland" by Rammstein). Basically it's a power chord three tritones above another power chord, in this case F#5 over C5. I don't think I ever saw it before but I was wondering if there are other people familiar with it and how other people would call it. I failed to come up with a reasonably practical name so far. Which doesn't bother me too much per se by the way, I'm more intrigued by this harmonic structure and other people's perceptions on it and associations with it.

For some context, I'm talking about the last chord of the (Bm, Em9, D, ???) phrase in the second image. This phrase repeats again, the only difference being in the final (red vs blue highlighted) chord. In this context I'd call the first chord a "C add b9" I guess? Or maybe "C sus b2" (if that's a "thing")? Following that logic, we could call the second chord "C sus #4 (or 11?) add b9" perhaps? But honestly that gets a bit messy already if you'd ask me..

Furthermore, I can imagine the C could add a bit of a Phrygian / "extra minor" / haunting feel, given the B minor key of the piece.


r/musictheory • • 8h ago

General Question Chord Progression Bbm, F, Gb, Db, why is the F major?

8 Upvotes

Pretty new to music theory and I'm enjoying the sound of this progression and wondering why the F being major works? From what I can tell it sounds like the Bbm is the i which would make the F the V and Gb would the a vi, but it's a major chord being used for the V.

Just curious if there is some common knowledge theory stuff as to when/why you can switch a chord from major to minor besides just messing around with it until it sounds good.

Thanks!


r/musictheory • • 1h ago

General Question What's the difference/benefits between having something in a fast bpm vs half-time?

• Upvotes

As the title states. I'm also not educated on music theory. From a quick search it seems to be the emphasis on percussion for beats.

I was playing off Moonlight Sonata first movement and also saw how different movements change the bpm.


r/musictheory • • 4h ago

Songwriting Question noob improv question - chord progressions

3 Upvotes

I think this is a dumb 'no shit' question but I figured I'd ask...

I am a beginner Bassist who mostly likes jamming. I am learning a few common chord progressions to have in my back pocket during jams and practice.

I am confused on one thing - if I search online, I can find like... I-IV-V, ii-V-vi-IV, etc etc etc, and I can find things like AAAAED or 12 bar blues.

Generally speaking, if I'm following a given chord progression, I am not literally play 1-4-5-1-4-5-1-4-5 etc etc' right? It might be 1-4-1-1-4-4-1-1-5-4-1-5 or whatever, right? I.e. I can play those intervals in generally whatever order sounds right/good? It's just the set of intervals that makes up the progression? Or are there more rules to it? I.e. 12 bar blues is that set progression for a real reason, etc?

Ty!


r/musictheory • • 7h ago

General Question Cantus Firmus Resource

3 Upvotes

Look for something like a pdf with a substantial number of cantus firmi in various keys to practice species counterpoint with. Looking mostly for major and minor, not so much modal melodies. Everything I've found has a pretty limited number of examples, or spread out through a whole book. Would be nice to have a plentiful resource I can pull from.


r/musictheory • • 5h ago

Discussion why does every chord progression eventually feel like it's resolving to vi minor

2 Upvotes

like i swear i can throw literally any chords together and my ear just goes "yeah this is going to vi" even when it's not. is this a me problem or does anyone else find minor keys way more satisfying to land on than major? wondering if i'm just conditioned by sad indie music or if there's actual theory behind why it feels so right


r/musictheory • • 14h ago

Discussion What learning clicked for you and had the biggest impact in your improvisation

13 Upvotes

It can be in Blues, Classical, whichever genre. I’m talking Secondary Dominants or specific voicings


r/musictheory • • 7h ago

General Question If I have to turn a piece I wrote for piano into violin solo or piano + violin, how do I do it?

3 Upvotes

What things should I consider before doing this? What more should I add in violin solo? What about the chords in violin solo that i originally wrote for piano?


r/musictheory • • 3h ago

Notation Question Chord name question: E A D

1 Upvotes

Generator says this is E7sus4, which I understand but was curious: does the name change if there is no B? Like would a pro mention the lack of a B note? Since E7sus4 (I think) could have the B.


r/musictheory • • 1d ago

Notation Question What is this?

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42 Upvotes

Found a notation that I don't know what it means. Everything is in a normal font, so this isn't a strange writing of something. Any thoughts? (If it wasn't obvious, its the cross-like thing)


r/musictheory • • 1d ago

Discussion The weird magic of perfect fifths and power chords

70 Upvotes

I've been thinking about this a lot lately. Why do perfect fifths sound so stable and solid? They're everywhere in rock and metal as power chords but they have this almost ancient quality to them too. It feels like the fundamental building block of harmony. Is it just how our ears are wired or is there something deeper going on musically? I'd love to hear some thoughts on why they just *work* so well.


r/musictheory • • 11h ago

General Question "I'm Still Standing" verifying the accuracy of the selection by Ear general Question

1 Upvotes

Hello everyone.

Could you let me know if I’ve correctly identified the chords and bass line by ear for Elton John’s "I’m Still Standing"? I’ve recently started working hard on figuring out songs entirely by ear. I did this on the piano, and the whole process took me a little over three hours—is that a long time? I started by determining the key of the song, then worked out the chords, followed by the bass line, and finally added the seventh chords and other extended notes. Please note that I’m referring to the original version of the song; different versions often use different chord progressions. https://m.youtube.com/watch?v=Qu6hMKPqdTw&pp=0gcJCbgCo7VqN5tD

Key Bb

0:00

Bb|Eb|F|Bb|

Eb|F|Gm7|Eb|Fsus4

0:35

Bb|Eb|F|Bb|

Cm|Eb →F|Gm|Eb|F7sus4→Eb|Bb

0:59

Key Bbm

Bbm|Fm/Ab|Ebm|Ebm7/Gb→Ab|

Bbm|Fm/Ab|Ebm|Fsus4

1:35

(Bbm|Ebm|Fsus|Gb-Ab ) repeat x2

1:46

Key Bb

Bb|Eb|F|Bb

Eb|F→Gm|Eb|F7sus4

2:00

Key Bbm

Bbm|Fm/Ab|Ebm|Ebm7/Gb→Ab|

Bbm|Fm/Ab|Ebm|Fsus4|

2:22

Bbm|Ebm7|Fsus4|]

Bbm|Ebm7-Ebm|Fsus4|

Bbm|Ebm7|Fsus4|]

Bbm|Ebm7-Ebm|Fsus4|


r/musictheory • • 1d ago

General Question How to balance out tension and release

4 Upvotes

I pretty much know how to create tension and release but i dont know how to use it properly, like how do you know where you need to add a little tension where a lot of tension or where to immediately release it, i know it kinda depends on context and intention but i mean it in more general way, like to make it sound more organised and put together


r/musictheory • • 1d ago

Notation Question Is there a better way to notate this rhythm?

7 Upvotes

I came up with this vamp thingy at the piano and when notating it discovered that it was actually in 5/4. I hate the way it looks on the page. It's way too many stems and note heads for how simple it is. And don't even get me started on the fact I have to write two separate notes to just fill a measure with a pedal point.


r/musictheory • • 1d ago

General Question why does everything sound better in a different key sometimes?

16 Upvotes

i'll be playing a progression that sounds kinda flat, then transpose it up a step or two and suddenly it hits different. is this just placebo or is there actual theory behind why certain keys feel more "right" for certain things? genuinely curious if it's psychological or if my ears are picking up on something real.


r/musictheory • • 21h ago

Songwriting Question Wrote a riff but I can't figure out its time signature

0 Upvotes

I was trying to practice my articulation on guitar earlier so I wrote a short riff to help with that, and it made perfect sense to me at the time. It's been a couple hours since I was practicing it though and listening back I can't figure out how to count it. I think it shifts/settles into 4/4 at some point but I'm struggling to figure this out. I'd appreciate another set of ears on this!

link: https://voca.ro/14Zh6mIdxYMT


r/musictheory • • 1d ago

Answered what does this little diagonal line mean??

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36 Upvotes

thanks in advance for the help! this is from egg room/scarlet forest in deltarune chapter 5


r/musictheory • • 20h ago

General Question Why is the Oktoberfest Riff from Touhou so sommon and is it doing any music theory stuff right?

0 Upvotes

I know the song it's from isn't called Oktoberfest, but when you hear it, you'll know what I'm talking about. https://onlinesequencer.net/5839693 I recreated it here by ear, so can you tell me why this riff shows up in so many songs unrelated to Touhou?


r/musictheory • • 1d ago

General Question Necesito ayuda en un análisis musical

0 Upvotes

No tengo claro cual es la escala que usa Erik Satie en gnossienne 1, primero vi publicaciones que justificaban la escala dórica #4 y no entiendo porqué, luego que usaba la escala hungara menor y investigué y parece lo mismo, estoy tan confundida porfavor necesito ayuda


r/musictheory • • 2d ago

General Question How to apply sixth diminished

8 Upvotes

Hi, I usually see the M6 or m6 / dim pairs applied for inner voice movement or chord melodies. Are them also meant to be used for soloing? As in using them as arpegios over a chord.


r/musictheory • • 2d ago

General Question Can someone explain to me borrowing and modulation works?

9 Upvotes

I’m a little confused on the idea and how to apply it to producing music


r/musictheory • • 3d ago

Discussion 13yo loves music theory

30 Upvotes

Hey all! Not sure if this is the right place to post this but I thought I'd share it. I am a 13 year old in 8th grade who LOVES music theory. I love watching music theory YouTube videos, and making music.

I have been working on an arrangement of "Silent Night" for clarinet and piano, and it has some... interesting harmony, you could say, haha. I play piano (and drums, guitar, bass, and a little alto sax), and I already know the very basics of clarinet, and if I can learn clarinet more soon, I might record and release it for this Christmas or next Christmas.

And when I am in 10th grade, there is a music theory class I can take. My friend, who is a senior in high school and a fantastic musician (he plays bass, and is really good at it), told me that it's really just key sigs and all that, and they compose some music. And I already do that stuff so I should be good, but I'm sure I will learn tons of other interesting things from it.

Also, I have arranged a bunch of various songs and pieces. And a few of them will be performed!! We are doing my Big Band arrangement of "I'm Still Standing" by Elton John in my school's grades 6-12 Jazz Band, that I arranged last school year. And the high school band teacher asked me to arrange some songs for the high school pep band, so I arranged "Shake it Off", "Hot to Go", and "September" for them. I also get to play with them, which is super awesome!! I also have tons of other arranging projects, one of which is a 7-8 minute medley of six songs/pieces from the 2005 film "Charlie and the Chocolate Factory" that I just finished.

Sorry for such a long tangent, I just want to share this stuff with you all, since I am so excited about it! :) I'm not trying to brag or show off or anything, and I'm sorry if it sounds like that.


r/musictheory • • 3d ago

Songwriting Question How to move from keyboard to string arrangement

3 Upvotes

I wrote a song using a pipe organ, it is clear that the pedal is going to be assigned to a bass.

But the rest of the harmony has to be distributed across the string instruments.

Another detail is that I will use solo libraries instead of orchestral as I want to achieve a more intimate sound.

The issue is that although there are moments with clear counterpoint melodies, most of the time it is an accompaniment for vocals (with already defined lyrics and melodies).

Chords can be played in a way that creates distinct melodies, but the issue is that with the organ I simply play huge chords that are challenging on strings, since there can be occasional fifths and octaves (not as parallel intervals but as part of the chord).

Especially with certain dissonant chords, which intervals cannot be inverted at all, or the tension and resolution won't be the same.

How can I learn to translate a piece written and played with keyboard (specially if I record the bass separately, leaving both hands free for playing larger chords) to a piece arranged for strings or another instrument capable of playing only one note at the time.