“A chord in music is any harmonic set of three or more notes that is heard as if sounding simultaneously.” (Wikipedia, accessed August 7, 2013) To me, chords form the shell of a piece of music – the walls and roof of a house, so to speak. For me, this is the most difficult part of composing and always has been. Possibly because I’m a percussionist and therefore spent a lot of time focusing on rhythmic patterns and combinations rather than harmonic. Harmony? “Harmony is the use of simultaneous pitches (tones, notes), or chords. The study of harmony involves chords and their construction and chord progressions and the principles of…