Online References

• Chords (music)
  http://en.wikipedia.org/wiki/Chord_(music)
• Chord Notation
  http://en.wikipedia.org/wiki/Chord_notation
• Circle of Fifths
  http://en.wikipedia.org/wiki/Circle_of_fifths
• Composition
  http://en.wikipedia.org/wiki/Musical_composition
• Guitar
  http://en.wikipedia.org/wiki/Guitar
• Guitar Chords
  http://en.wikipedia.org/wiki/Guitar_chord
• Intervals (music)
  http://en.wikipedia.org/wiki/Interval_(music)
• Inversions (music)
  http://en.wikipedia.org/wiki/Inversion_(music)#Inversions
• Jazz Chords
  http://en.wikipedia.org/wiki/Jazz_chord
• Keyboard
  http://en.wikipedia.org/wiki/Musical_keyboard
• Notes and Note names
  http://en.wikipedia.org/wiki/Note#History_of_note_names
• Piano
  http://en.wikipedia.org/wiki/Piano
• Progressions (music)
  http://en.wikipedia.org/wiki/Chord_progression
• Roman Numeral Analysis
  http://en.wikipedia.org/wiki/Roman_numeral_analysis
• Scales (music)
  http://en.wikipedia.org/wiki/Scale_(music)
• Stringed Instrument Tunings
  http://en.wikipedia.org/wiki/Stringed_instrument_tunings