Software requirements

The exercises are HTML5 and Javascript based and are compatible with tablets and mobile devices. Web Audio technology is used to play musical sounds and require the use of newer versions of any of the following browsers:

  • Google Chrome version 31 or higher
  • Firefox version 31 or higher
  • Microsoft Edge
  • Safari version 7 or higher
  • Opera version 30 or higher
  • iOS Safari version 7.1 or higher
  • Android Browser version 40 or higher
  • Chrome for Android version 42 or higher

You can answer using a MIDI keyboard in most ear training exercises if you use one of these browsers:

  • Google Chrome version 43 or higher
  • Opera version 30 or higher


If you have problems with the exercises despite using one of these browser we recommend:

  • Reload the page by pressing CONTROL+R (Command+R in Macs) to force the browser to read the latest version
  • If the previous step does not work, you may try to clear your browser's cache

Write to us if you still have problems. Please send us as much information as you can:

  • Exercise name
  • Options you're using
  • Problem description
  • Screen shots that would help pinpoint the problem

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Creative Commons License
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
José Rodríguez Alvira.