Theory Lessons features 39 music theory lessons from, presented in their original animated versions.

Complete lesson list:

• The Staff, Clefs, and Ledger Lines
• Note Duration
• Measures and Time Signature
• Rest Duration
• Dots and Ties
• Steps and Accidentals

• Simple and Compound Meter
• Odd Meter

• The Major Scale
• The Minor Scales
• Scale Degrees
• Key Signatures
• Key Signature Calculation

• Generic Intervals
• Specific Intervals
• Writing Intervals
• Interval Inversion

• Introduction to Chords
• Triad Inversion
• Seventh Chords
• More Seventh Chords
• Seventh Chord Inversion

• Diatonic Triads
• Roman Numeral Analysis: Triads
• Diatonic Seventh Chords
• Roman Numeral Analysis: Seventh Chords
• Composing with Minor Scales
• Voicing Chords
• Analysis: O Canada

• Nonharmonic Tones
• Phrases and Cadences
• Circle Progressions
• Common Chord Progressions
• Triads in First Inversion
• Triads in Second Inversion
• Analysis: Auld Lang Syne

• Building Neapolitan Chords
• Using Neapolitan Chords
• Analysis: Moonlight Sonata

What’s New

Version 3.1.1

• Improves compatibility with newer devices.
• Fixes an issue with swipe gestures.
• Fixes an audio glitch with certain piano sounds.

Ratings and Reviews

4.4 out of 5
82 Ratings

82 Ratings

Clikeer ,

Amazing! Just one thing to add

I didn't get into music theory until I got a guitar on a whim, then I wanted to try to actually learn music as a side thing, and now for the first time I feel like I actually know a little something about music.

Only thing I would add to the app is something that you already have on your website (where I learned from, I downloaded the app and it's sister tenuto) is the pop-up piano that helped me figure out scales (I never learned piano so it was easier for me to visualize this way). Otherwise, thanks for you hard work!

quasar1334 ,

Truly Very Nice

I had needed a great music theory app, and this fulfills my need quite perfectly.

The teaching is laid out in a very easy-to-understand format with attractive interactive user-friendly diagrams.

By the end of the first lesson, I felt as if I’d learnt quite a lot. And all without any effort at all. It’s unbelievable!

I already have an excellent practical practice app, in form of playgroundsessions app, that I had bought in a package deal along with a baby grand piano.

But I had found the hands-on playgroundsessions teaching tool to be slightly lacking in deep music theory support.

So I went looking for something to compliment the playgroundsessions hands-on app, and to hence fully round out my musical education.

Now I have one app for hands-on practice, and this one, for in-depth theory learning.

This is great!

mecarboy ,

Best app in store for beginner

This app is the best in the store for understanding,y and comprehensively explaining the mechanics and structure of music writing so one can begin understanding sheet music and effectively sight reading piano music. This app saves me huge amounts of "lesson time" and speeds my learning with clear understandable illustrations and very effective drills. Congratulations on a super app.

App Privacy

The developer,, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

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  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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