Learn music theory with Sonid
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    Learn music theory with Sonid

    Learn music theory with practical tools, guided app exercises, and a complete reference for chords, scales, notes, intervals, and modes.

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    • For beginners
    • For guitarists
    • For pianists
    • Ear training
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    • Intervals
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    • Music Theory Playground
    • Metronome
    • Why and how to play with a metronome
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    Created byMartijn van der Eijk
    Written byLida van der Eijk
    Vectors byFreepik

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    YoutubeMusic Theory Video SeriesA step-by-step guide to music theory fundamentals. These 60-second videos provide a clear, structured path to understanding how music works, optimized for a full-screen learning experience.YoutubeMusic Theory ShortsMaster music theory concepts in 60 seconds or less. Quick, vertical videos designed to give you essential theory knowledge in a fast-paced, mobile-friendly format.
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    @copyright Martijn van der Eijk 2026
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    4. Product Update: May 2026

    Product Update: May 2026

    Sonid 3.6.4 is live on iOS and Android with smoother Learn & Analyse, guided tours, a visible streak, and a bigger florin store (boosts, streak shields, combo starters, lesson tokens, and more). On sonid.app: practice deep links, listen & solfege examples, the Music Theory Playground—and Sonid Classroom for teachers is coming soon.


    Author: Lida van der Eijk
    May 30, 2026

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    If you installed Sonid in April, you already met 3.4.0 — the return to the App Store and Google Play, the redesigned interface, new languages, and localized note naming. May was about turning that foundation into something that feels smoother week by week. Today, version 3.6.4 was approved on both stores.

    What’s new in 3.6.4

    This release is an iteration build: lots of smaller improvements that add up when you practice every day.

    • Learn & Analyse — clearer layout and navigation so lessons and progress are easier to follow.
    • First-time guidance — short guided tours on Learn help you find your way without hunting through menus.
    • Streaks — your daily streak stays visible while you move around the app.
    • Visual polish — updated theme, icons, and splash screens so the app feels more consistent end to end.
    • Expanded store — spend the gems you earn on a much wider shelf of power-ups: XP and florin boosts, a streak shield when life gets busy, combo starters and mistake forgive for tougher lessons, skip and last chance tokens, a guitar one-time pass, plus the usual ad-free upgrades. Buy what fits your routine and use items from your inventory when you need them.

    Under the hood we also kept improving home animations and fine-tuned subscription pricing display in the store.

    Update when your store shows 3.6.4 — if you’re already on 3.4.x or 3.5.x from earlier in May, you’re on the same track; this is the store build we’ve been working toward all month.

    Learning on sonid.app

    May wasn’t only about the app. We spent a lot of time making the theory libraries feel like places you can study, not just read—then jump into Sonid when you are ready to drill.

    From reading to practicing in one tap

    • Practice now on chord, scale, and interval pages opens the matching exercise in Sonid via sonid://exercise/… links.

    On this page
    • What’s new in 3.6.4
    • Learning on sonid.app
    • From reading to practicing in one tap
    • New: Music Theory Playground
    • Coming soon: Sonid Classroom
    • Thank you
    Music theory libraries
    On this page
    • What’s new in 3.6.4
    • Learning on sonid.app
    • From reading to practicing in one tap
    • New: Music Theory Playground
    • Coming soon: Sonid Classroom
    • Thank you
    Coming Soon: Capo by Sonid
    Product

    Coming Soon: Capo by Sonid

    June 16, 2026

    Capo puts Sonid’s chord and scale library on an interactive fretboard for guitar, bass, ukulele, mandolin, and more. The mobile app launches July 4, 2026 — here’s everything waiting on the neck.

    Store-focused visual for Sonid 3.4.0 release post
    Product

    Sonid 3.4.0 Is Here: Back on iOS and Android

    April 22, 2026
    Sonid 3.4.0 is back on Android and iOS with a full UI revamp, latest Vue upgrade, new Italian/Portuguese/German locales, language-aware solfege notation, and new sonid://exercise deep links from the website.
    Product
    Music theory libraries
    Chord libraryScale libraryInterval guide
  1. Practice banners on those same pages repeat the call to action in context—so you do not have to hunt for a small link at the top.
  2. Listen sections on chord and interval pages (and scales where audio is available) let you compare spellings and diagrams with real sound—pick different voicings or views from a simple player.
  3. Solfege in real songs on chord and interval detail pages: curated examples with short write-ups and Spotify previews, so you hear movable-do syllables in actual music—not only on a chart.
  4. New: Music Theory Playground

    Later in May we shipped a Music Theory Playground: a free in-browser tool to explore notes, intervals, chords, and scales on a virtual piano, guitar fretboard, and sheet music. Change tonic and octave, switch instrument view —handy for quick checks, homework, or noodling before you open the app.

    Coming soon: Sonid Classroom

    We spent much of May building Sonid Classroom — a dedicated space for music teachers and schools (opening soon).

    Classroom is for anyone who teaches with Sonid and wants visibility into how students are doing, not just individual practice in isolation. Planned highlights include:

    • A teacher dashboard with lesson activity, completions, and mistake trends over time.
    • Student profiles so you can see who is active, who needs a nudge, and how each learner is progressing.
    • Invite codes students enter in the Sonid app (Profile → Join classroom) to link their account to your school.
    • Owner & teacher roles — manage multiple teachers, seats, and billing as your studio grows.

    We’re putting the finishing touches on Classroom now. If you teach ear training or theory and want early access, keep an eye on the blog.

    Thank you

    April brought Sonid back. May brought 3.6.4, a better bridge from the website to the app, and the classroom tools we’ll open next. Thanks for the reports and patience while store review caught up with the builds we shipped through the month.

    Chord library
    Scale library
    Interval guide