Watch the Melody a la Mode online guitar lesson by Matthieu Brandt from Songwriting on Guitar
We've mainly worked with melodies / chord progressions within a major harmony upto now. Minor harmony gives us several scale option, with a slightly different sound as a result. The 'modes' we'll encounter most often in pop- and rock music are the Aeolian minor mode, the Dorian minor mode and the Harmonic minor mode.
Each of these modes are a set of seven notes and seven triads derived from them. Using a specific mode will color your song a certain way, but often these modes are mixed up within one composition.