... or more notes of different pitch, at the same time. There are two types of harmonies. A concord is a "nice" sounding chord, since the notes fit together and sound well when played. A discord is a "horrible" sounding chord, since the notes don't fit together and don't sound well when played. Discords are there to create attention and are usually followed by concords to make the melody sound right. Complexity is about making the music become more complicated. A melody can be changed over the ground bass in the following ways: ? The melody can be decorated with extra notes and ornaments (such as trills) ? The rhythm of the melody can be changed, and/or the metre (number of beats to a bar) ? The tempo (speed) can be changed ? The harmonies can be changed (concords to discords or vice versa) ? The mode can be changed from a major key to a ...

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