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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    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. Sonid 3.4.0 Is Here: Back on iOS and Android

    Sonid 3.4.0 Is Here: Back on iOS and Android

    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.

    Author: Lida van der Eijk
    April 22, 2026

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    On this page
    • Sonid 3.4.0 is here
    • A complete UI revamp
    • Upgraded to the latest Vue version
    • New languages: Italian, Portuguese, and German
    • Correct solfege syllables by language
    • New deep links: sonid://exercise
    • What this release means
    Music theory libraries
    On this page
    • Sonid 3.4.0 is here
    • A complete UI revamp
    • Upgraded to the latest Vue version
    • New languages: Italian, Portuguese, and German
    • Correct solfege syllables by language
    • New deep links: sonid://exercise
    • What this release means
    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.

    Product Update: May 2026
    Product

    Product Update: May 2026

    May 30, 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.

    Product
    Music theory libraries
    Chord libraryScale libraryInterval guide
    Chord library
    Scale library
    Interval guide

    Sonid 3.4.0 is here

    Sonid is officially back in both the Android and iOS stores, and version 3.4.0 marks one of our biggest updates yet. This release is focused on making the app feel better, faster, and more native to every learner regardless of language.

    A complete UI revamp

    We redesigned the interface from the ground up. Navigation is clearer, exercises are easier to follow, and the overall visual style is cleaner and more consistent. The goal was simple: less friction, more music.

    Upgraded to the latest Vue version

    Under the hood, Sonid now runs on the latest Vue stack. This internal upgrade improves long-term maintainability and gives us a stronger base for future features. It also helps improve responsiveness and stability throughout the app.

    New languages: Italian, Portuguese, and German

    Sonid 3.4.0 adds full locale support for:

    • Italian
    • Portuguese
    • German

    This is part of our ongoing effort to make ear training and music theory more accessible internationally.

    Correct solfege syllables by language

    We also improved how note naming is displayed across locales. Where relevant, Sonid now uses proper localized solfege notation (such as Do Re Mi) instead of forcing C D E. This makes exercises more intuitive for learners who study music in different naming systems.

    New deep links: sonid://exercise

    You can now open exercises directly from this website into the Sonid app using the new sonid://exercise links. This creates a much smoother flow between web content and mobile practice, and unlocks more connected learning experiences going forward.

    What this release means

    Version 3.4.0 is not just a return to the app stores. It is a strong foundation for what comes next: better usability, broader language support, and tighter integration between Sonid platforms.

    Thanks for your support and feedback. More updates are already in progress.