r/musictheory • • Jul 21 '26

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

204 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

243 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 • • 16m ago

General Question Are memes allowed here?

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• Upvotes

vii°⁷ — I just sounds so much more juicy imo


r/musictheory • • 10h ago

General Question Minor keys can be 'happy' if they are fast. Examples of 'happy' melodies that are minor and slow?

21 Upvotes

I can think of lots of melodies in a minor key that are made 'happy' by their tempo and rhythm [e.g. "What Shall We Do With the Drunker Sailor?"]

But I genuinely can't think of any melody in a minor key that is 'happy' despite being slow and in a minor key.

Can anyone give me an example?

[NB - instrumental melodies only. There are slow, minor songs that might have uplifting lyrics which make them 'happy' overall, but I'm thinking of melody only]. Also, I realise that some minor melodies are so beautiful that they make us happy just to hear them [e.g. a slow Chopin nocturne, or whatever] but I'm not counting them either]


r/musictheory • • 30m ago

General Question How can i improve my music?

• Upvotes

So i mostly do covers on spotify,

im pretty new, got 100 to no views, want some tips to improve my music and how can i grow it!

https://open.spotify.com/artist/7z2T29jKxf44R1WsfOqRjw

So what im doing now is just cover songs, of games and animes, and even movies, but i DONT know how to get populair, its hard... ive asked (forced) some friends of mine to listen to it, but idkk....

I appriciate everyone taking a listen to it, or even follow!

UPCOMING: Interstellar
Planned date: October 27, 2026 2:00 CEST


r/musictheory • • 9h ago

General Question why does my brain automatically hear the relative minor when someone plays major?

3 Upvotes

like i'll hear a c major chord and instantly think a minor without anyone even playing it. is this just me being weird or is there actually some theory reason our ears do this? trying to figure out if i'm just overthinking it or if there's something about how those keys relate that makes this happen.


r/musictheory • • 21h ago

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

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21 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 • • 5h ago

General Question Chord recognition tip

0 Upvotes

Hello, I’ve started figuring out this melody on the piano. Are there really no complex 5- or 6-note chords here—just things like *sus* or *m7*? To my ears, it sounds like there are some fairly sophisticated, jazz-style chords. What would you suggest? For instance, at 0:09, I hear something like a Bbsus4add7 or a Bb9sus4. https://m.youtube.com/watch?v=tDkjr_cYO6M


r/musictheory • • 10h ago

Songwriting Question Jazz piano intro chords

0 Upvotes

I'm currently composing Jazz arrangements of polish Christmas carols. I'd like to start one of them with a very characteristic piano "downstairs chords", but I don't have enough music theory nor practice to figure out the actual chords. This is very characteristic melody, but I can't name any piece that I know, which contains it (otherwise I'd reverse-engineer it :))

The intro have the following properties:

  • 3/4
  • Uptempo
  • Four chords, descending
  • Piano plays V, III, I -> next chord -> V, III, I -> next chord etc. (or maybe VII, V, III -> VII, V, III?)
  • The chords are most likely 7th chords
  • Left hand plays the chords, right hand just the notes above

I'd be grateful for an advice on what the chords may be or how to play them. I've tried 7th chords, minor 3rds down, but it sounded realy crappy.

An example of my arrangement (this one is based on Andrzej Jagodziński Trio's "Christmas Carrols", but I have two more written from scratch, but WIP):

https://www.youtube.com/watch?v=8yh2n2LOGGA


r/musictheory • • 20h ago

Notation Question Chord name question: E A D

5 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 • • 15h ago

Notation Question Origem dos termos musicais modernos

2 Upvotes

Alguém conhece algum livro ou artigo confiável que trate da origem, história e evolução de termos da teoria musical? Nos materiais didáticos eu sempre encontro uma explicação sobre o que é alguma coisa, mas eu queria saber de onde deriva tal termo e como ele evoluiu até chegar na sua concepção moderna.

Eu sempre busco a etmologia de vários termos da teoria musical, o que amplia bastante a compreensão do significado e prática, mas me falta saber de fato a história e como eles se tornaram o que são hoje.


r/musictheory • • 1d ago

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

13 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 • • 19h ago

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

3 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 • • 22h ago

Songwriting Question noob improv question - chord progressions

6 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 • • 1d ago

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

21 Upvotes

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


r/musictheory • • 22h ago

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

3 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 • • 1d ago

General Question Cantus Firmus Resource

4 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 • • 12h ago

General Question What BPM is this song? Can't quite find a right answer

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0 Upvotes

r/musictheory • • 1d 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 • • 1d ago

Notation Question What is this?

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41 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 • • 17h ago

Answered Is this plagiarizm or...?

0 Upvotes

https://youtu.be/GhQ9BDxAczk

https://youtu.be/hV1pPgpcAVw (part starting in 0:30)

Those two tracks sound very close to my untrained ears. I wonder if those are just a combination of similarly sounding instruments and common music tropes, or if there's something worse at play.


r/musictheory • • 2d ago

Discussion The weird magic of perfect fifths and power chords

80 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 • • 1d 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

3 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 • • 2d ago

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

18 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.