Learn music theory with Sonid

    • For teachers & schools

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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.

    Product

    Use cases

    • For beginners
    • For guitarists
    • For pianists
    • Ear training

    Solutions

    • For teachers & schools

    Learn

    Theory

    • Intervals
    • Interval playlists
    • Chords
    • Scales
    • Terms
    • Notes reference

    Tools

    • Music Theory Playground
    • Metronome
    • Tuner

    Community

    • Blog
    • Basics
    • Ear training
    • About us

    Get the app

    App StoreGoogle Play

    About & legal

    Created byMartijn van der Eijk
    Written byLida van der Eijk
    Vectors byFreepik
    LegalEULA

    Socials

    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•EULA