1.10: Chapter Summary
In this chapter, we learned a basic definition of music as well as definitions of the basic elements of music. We also explored some basic facts about acoustics, including the nature of sound. We learned how tones comprised of organized sound waves sound to us like definite pitches, while disorganized sound waves are perceived as noise. We briefly touched on the harmonic series and how it influenced the nature of music, including properties of sound such as timbre.
Next, we explored how the development of musical notation made it possible to organize sounds into a wide variety of configurations. There are an infinite number of possible performing forces , but the most common would have to be the human voice followed by a wide variety of instruments including strings, woodwinds, brass, percussion, keyboards, and electric instruments.
Next we discussed the four main components of music: melody, harmony, rhythm and texture. Melody is defined primarily by its shape, and can be broken up into smaller components called motives. Harmony, which is the vertical aspect of music, can be described in its most basic terms as dissonant or consonant. Harmony is often built in thirds through the use of three-note chords called triads or four-note chords called seventh chords. Whole sequences of chords are known as chord progressions. Compositions are harmonically grounded through the use of key centers, tonic notes, and scales.
Rhythm is the way the music is organized in respect to time. The fundamental unit of time is the beat, which is further broken into groupings called measures. These groupings are determined by the meter of the piece, which is often either duple, triple, or quadruple. The speed at which these beats go by is known as the tempo. Other rhythmic devices such as syncopation and polyrhythm can add further variety to the music. On a larger scale, music is put together in terms of its form. We discussed three common song forms, the blues, AABA and the Verse and Chorus.
Texture refers to the ways in which musical lines of a musical piece interact. Common textures include monophonic texture (one melodic line), homophonic texture (accompanied by chords), and polyphonic texture (simultaneous melodies). We also saw that composition and improvisation are the two major processes used to combine the musical elements we discussed. They may be used independently or they may be combined within a composition. These topics are key concepts to remember while reading the upcoming chapters where they are further expanded upon.