Triads may be thought of as generated by stacking two thirds atop one another. We’ll begin by investigating the simplest of chords - triads. In fact, what we consider to be a chord is based on some narrow restrictions, stemming from acoustic principles and cultural practices. In Western tonal music, not every combination of three or more pitches forms a chord. We’ll investigate three- and four-note chords in this unit, and touch on the idea of extending chords with more pitches. Others feel that some chords can be formed even by five or more pitches. Some musicians feel that only certain three- and four-note groups constitute chords. Three or more pitches can combine to form what musicians call a CHORD. Two pitches can combine to form an interval. This unit will examine combinations of three or more pitches as they form chords. The following videos review the operative concepts: Thus far, we’ve discussed individual pitches (in Units 3, 5, and 6), and pairs of pitches and the intervals they form (in Unit 7).
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