References - The following resources have been used to define musical concepts presented in this website.

• The major scale - http://en.wikipedia.org/wiki/Major_scale
  
  
• C major - http://en.wikipedia.org/wiki/C_major
  
  
• A minor - http://en.wikipedia.org/wiki/A_minor
  
  
• Relative minor - http://en.wikipedia.org/wiki/Relative_minor
  
  
• The pentatonic scale - http://en.wikipedia.org/wiki/Pentatonic_scale
  
  
• Music intervals - http://en.wikipedia.org/wiki/Interval_%28music%2
  
  
• Half-step - http://en.wikipedia.org/wiki/Semitone