r/musictheory

Community Overview
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About r/musictheory

/r/musictheory is a community for the discussion of music theory and related topics. Since they are not well-covered in other subreddits, questions and discussions about Ear-Training/Solfege and Notation/Engraving are also welcome.

The community at a glance

r/musictheory is a Subreddit for Music Lovers with roughly 701K members. It has been around since 2009. It uses a forum format for communication. It is the 10th largest community in the Music topic page.

Roughly 68K members have joined in the past year. Popular discussion topics include Looking For, Music Theory, and Chords. Product recommendations often mention music theory books, music theory online course, and music composition resources.

On Reddit
Established 2009
701K Members

Community Topics

Community Features

Forum

This community has a forum

Subreddit Analysis

via GummySearch
Yearly: +68K members
Growth: +10.7% / year

Member growth over time

All time (yearly)

  • 2013: 11K members
  • 2014: 12K members
  • 2015: 13K members
  • 2016: 15K members
  • 2017: 34K members
  • 2018: 53K members
  • 2019: 91K members
  • 2020: 125K members
  • 2021: 70K members
  • 2023: 112K members
  • 2024: 50K members
  • 2025: 68K members
  • 2026: 30K members

Past year (monthly)

  • Jul: 5K members
  • Aug: 5K members
  • Sep: 5K members
  • Oct: 5K members
  • Nov: 7K members
  • Dec: 7K members
  • Jan: 6K members
  • Feb: 6K members
  • Mar: 6K members
  • Apr: 5K members
  • May: 6K members
  • Jun: 693 members

Topics

  • Looking For
    43 posts in the past month
    #1
    Looking For
    43
  • Music Theory
    35 posts in the past month
    #2
    Music Theory
    35
  • Chords
    31 posts in the past month
    #3
    Chords
    31
  • Theory
    31 posts in the past month
    #4
    Theory
    31
  • Struggling
    30 posts in the past month
    #5
    Struggling
    30

Flair

  • General Question
    106 posts in the past month
    1. Designed a darkness/brightness spectrum scale poster. Would appreciate any feedback
    2. Genuinely how am I meant to do this.
    3. Why is this circle of fifths different from every other one i have seen?
    #1
    General Question
    Designed a darkness/brightness spectrum scale poster. Would appreciate any feedback · Genuinely how am I meant to do this. · Why is this circle of fifths different from every other one i have seen?
    106
  • Notation Question
    36 posts in the past month
    1. how is this possible?
    2. I have a big doubt about a certain time signature
    3. Need help with this key signature
    #2
    Notation Question
    how is this possible? · I have a big doubt about a certain time signature · Need help with this key signature
    36
  • Discussion
    25 posts in the past month
    1. Any word-rhythm pairings you'd change for kids (3-7)? Images will be added later.
    2. Omg. It turns out ear training and learn theory actually works 😭😭
    3. Can we ban new "music theory app" posts? They're flooding the sub these days.
    #3
    Discussion
    Any word-rhythm pairings you'd change for kids (3-7)? Images will be added later. · Omg. It turns out ear training and learn theory actually works 😭😭 · Can we ban new "music theory app" posts? They're flooding the sub these days.
    25
  • Songwriting Question
    16 posts in the past month
    1. Why does D → E7/D → Gmaj7 sound so ethereal in a D major piece?
    2. Why does Gm6 work in the key of G major?
    3. What is this chord?
    #4
    Songwriting Question
    Why does D → E7/D → Gmaj7 sound so ethereal in a D major piece? · Why does Gm6 work in the key of G major? · What is this chord?
    16
  • Resource (Provided)
    7 posts in the past month
    1. I built a Free and Open Source functional ear trainer.
    2. I created a website to practice jazz voicings with a MIDI controller
    3. I created ChordsCrush, a free website to learn and practice playing piano chords
    #5
    Resource (Provided)
    I built a Free and Open Source functional ear trainer. · I created a website to practice jazz voicings with a MIDI controller · I created ChordsCrush, a free website to learn and practice playing piano chords
    7

Product recommendations

  • music theory books
    7 posts in the past month
    1. Can anyone recommend good books of music theory?
    2. What are some top recommended books for practical jazz Harmony?
    3. Could anyone recommend any beginner-friendly books about harmony and composition?
    #1
    music theory books
    Can anyone recommend good books of music theory? · What are some top recommended books for practical jazz Harmony? · Could anyone recommend any beginner-friendly books about harmony and composition?
    7
  • music theory online course
    2 posts in the past month
    1. Can anyone recommend me an online teacher for music composition?
    2. Can someone recommend a music theory online course with exams/tests?
    #2
    music theory online course
    Can anyone recommend me an online teacher for music composition? · Can someone recommend a music theory online course with exams/tests?
    2
  • music composition resources
    2 posts in the past month
    1. What are the best free music composition apps that I can get for phone?
    2. Can anyone recommend good resources for beginning to learn music composition?
    #3
    music composition resources
    What are the best free music composition apps that I can get for phone? · Can anyone recommend good resources for beginning to learn music composition?
    2
View full analysis on GummySearchSynced 6/4/2026

Frequently asked questions

Who is r/musictheory for?
Best for Music Lovers enthusiasts looking for a Reddit-based community with forum discussion.
Is r/musictheory free to join?
This listing is not marked as paid-only. Access rules and any fees are decided by the community.
How many members does r/musictheory have?
Roughly 701K members, based on figures reported by the community or its host. Member counts are approximate and change over time.
What platform is r/musictheory on?
r/musictheory runs on Reddit. Reddit communities (or "subreddits") are forum-based groups on the popular social news aggregation, web content rating, and discussion website Reddit. Reddit is commonly known as "the front page of the internet". Users submit content to the site such as links, text posts, and images, which are then voted up or down and discussed by other members. From investing Reddit communities, to professional ones, to ones just for laughs, you're likely to find a community for you on Reddit.
What topics does r/musictheory cover?
On the Hive Index, r/musictheory is organized under Music Lovers.
How do I join r/musictheory?
You can join r/musictheory by clicking this link, or pressing the "Go to community" button above.
What are the Music communities like?
One of the larger topic areas on the site, covering music production, instruments, genres, and the business of the industry. Discord hosts communities for producers, beatmakers, and musicians at every level, Reddit has massive communities for genre-specific discussion, and dedicated platforms serve niche interests from jazz theory to synth collecting.
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Monthly Stats

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