Published by Hooktheory LLC

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About Hooktheory I

1. Hooktheory I is a smart, fun, skill-building journey that concretely teaches you how to craft melodies and chord progressions like professional musicians and gain a deep understanding and intuition for how music works.

2. This how-to journey on melody and chord creation is fun to read, easy to understand, and teaches you practical knowledge that will take your chords and melodies to the next level.

3. We wrote this book because we were tired of all of the “songwriting” websites / books that talk vaguely about “finding your inspiration”, or rhyming lyrics, or some other soft, non-actionable component of creating music.

4. Validated by 16,435 musicians like you, Hooktheory I is the best selling how-to music book for instrumentalists, songwriters, producers, and DJs around the world for a reason.

5. Dedicate only a few hours to reading this book and gain a lifetime of skills that will give your music that professional edge.

6. Reading Hooktheory I doesn’t require any previous music knowledge or the ability to read music.

7. It contains 41 interactive exercises and 94 audiovisual examples from artists like: Avicii, Beyonce, Journey, Maroon 5, Taylor Swift, and The Beatles, that make it easy to see the tactics these successful artists use.

8. With Hooktheory I, we created an approachable, intuitive resource that concretely answers the hard questions: Why do certain chords fit together easily, and others not so easily?

9. There has never been a music book like this.

10. On average, it takes about five hours to read (but more to fully absorb) so it isn't a huge time commitment.

11. How can I get from this chord to that chord?

Hooktheory I Customer Insights

1. If I had one ask it would be to include 'classic' examples from history as well as examples from more modern/mainstream music....regardless, this app was so useful, I've just purchased the sequel...I could definitely see the Hooktheory methodology implemented into schools, where I think it would fit brilliantly and help a lot of people understand/learn music, who might otherwise have never done so....Wow... This is exactly what I've been looking for in terms of practical application of music theory.

2. You have time to promote a Black Friday sale but not to fix your app???Do NOT buy this... the audio doesn't work... repeat, DO NOT BUYI really wish it was longer! I was always interested in music but never formally taught, this is a wonderful recap of years of trial/error and a solid base to build on.

3. Google should remove it from the store.As another review mentioned the media examples are not loading - Hooktheory where are you? There is a review from August mentioning this same problem.

4. The idea behind this book is good, but the creators currently don't seem to care about it.Good app so far but there are issues when trying to play the audio.

5. All the examples in this book give me a 'media not found' Error.

6. I have found an app that will play the examples: search for xplayer in the Play Store."Media not found" error.

7. I'm embarrassed I bought this.The HookTheory apps are great it's unfortunate support don't seem to be getting back to peoples problems.

8. Breaks things down into manageable chunks and has an easy to follow style with plenty of examples.

9. All of the material in this app equates to only a few pages in a regular theory book you could buy for the same price.

10. I will definitely write a few songs before reading the second book to make sure to forget nothing of this one.

11. You can easily acquire the info in this app online for free with a few simple google searches.

Steps to Troubleshoot & Fix Hooktheory I Issues

1. Fix Hooktheory I Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart Hooktheory I: Restarting the app will resolve most errors.
  2. Update the Hooktheory I App. Here is how:
    1. On Android goto PlayStore » Search for "Hooktheory I" » Open Hooktheory I » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for Hooktheory I » click "UPDATE".
  3. Clear Hooktheory I app cache: Clearing cached data will force your app to retrieve the latest data directly from Hooktheory I servers.
    1. On Android, goto Settings » Apps » Select "Hooktheory I" » click Storage » click "Clear Cache".
  4. Check Hooktheory I app permissions. If any of these permissions required to use your device's features are disenabled, Hooktheory I might not work.
  5. Uninstall and reinstall Hooktheory I. If nothing else has worked, completely uninstall Hooktheory I then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing Hooktheory I not working


2. Fix Hooktheory I Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make Hooktheory I be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to Hooktheory I not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, Hooktheory I may not be able to connect to the Internet when running in the background.

Reported Issues