Essential Music Theory: Pitch, Texture, and Scales

Pitch and Sound Quality

Pitch is the quality of sound that allows us to distinguish whether a note is acute (high) or grave (low). This characteristic differentiates musical notes from one another.

Musical Texture

Texture refers to the way different melodic lines are interwoven, much like threads in a cloth. There are two main types of texture:

• Monophony (Monody): Composed of a single melody (one voice) without other simultaneous sounds.
• Polyphony: Consists of several simultaneous voices. Subcategories include:
  • Homophony: Several voices moving with the same rhythm.
  • Counterpoint: Two or more independent voices with different rhythms (e.g., the works of Guillaume de Machaut).
  • Melody with Accompaniment: A main melody supported by chords, arpeggios, or rhythmic elements.

Scales in Traditional Music

There are two primary types of scales in traditional music:

• Diatonic Scale: Rooted in European and Latin American culture. These feature fixed, regular time signatures and syllabic melodies (one syllable per note).
• Other Scales: Contain intervals smaller than a semitone. These are used in free-tempo music without fixed time signatures, often featuring melismatic melodies (multiple notes per syllable). The most common is the Spanish Phrygian scale.

The Evolution of Pop Music

Pop music is designed for a broad audience, hence the name "popular." While the genre began in the 1920s, early soloists often did not compose their own material. Following the influence of The Beatles, most groups began writing their own songs. By the 1980s, the "New Wave" emerged, characterized by synthesizers and drum machines. In Spain, this era saw the rise of "La Movida," with groups like Los Secretos, leading to pop's ongoing evolution through diverse stylistic influences.

Melodic Structure

Melodic Motifs and Sentences

A sentence is a melodic unit that may contain one or more melodic motifs. A melodic motif is the basic, simple material used to construct larger melodies.

Scale Intervals

• Major Scale: The relationship between notes follows the pattern: Tone, Tone, Semitone, Tone, Tone, Tone, Semitone.
• Minor Scale: The relationship between notes follows the pattern: Tone, Semitone, Tone, Tone, Semitone, Tone, Tone. It differs from the major scale in its emotional quality and note distances.

Musical Definitions

• Interval: The number of steps between two sounds at different heights, including the notes themselves.
• Accidental Alterations: Symbols that modify a note. An alteration affects all notes of the same name within the same measure unless canceled.
• Scale Degrees: 1st (Tonic), 4th (Subdominant), 5th (Dominant), and 8th (Octave/1st).