How To Install The Fretlight Chord & Scale Android App On An Amazon Device Running The Fire OS.

  1. Change the device's security settings to install "applications from anywhere". 
  2. Install the free ES File Explorer app from the Amazon App Store.
  3. Download the APK file from the following link: Chord & Scale Library APK
  4. Use the ES File Explorer app to locate the APK file in your downloads folder and open it to start its installation.
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