Understanding Song Structure and Chord Progressions in Music Composition
This lecture introduces the foundational elements of music sequencing, defining what a song is and exploring the basic building blocks essential to music composition. It covers melody, harmony, beat, and rhythm while discussing the role of triads and their importance in various keys. The session illustrates common chord progressions that have been influential in popular music and explains how to construct chord progressions effectively. Additionally, concepts like harmonic rhythm, cadences, and melody construction are introduced to aid in music writing.
Understanding Song Structure and Chord Progressions in Music Composition
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Presentation Transcript
MP-102 Lecture 1: Intro
What is sequencing? • Creating the order of musical events that make up a song, arrangement, or composition.
What is a song? • Songs are a very specific type of music • Designed to be “sung”: i.e. they have a melody and lyrics • Form is usually easy to follow • Generally easy to sing along with and listen to • Based on a basic musical idea that can be arranged or interpreted in many different ways Many musical compositions are NOT songs
Basic building blocks • Melody • “Tune” of the song, made up of musical phrases • Harmony • chord progression • Beat • pulse of the song • Rhythm • “timing” of the notes with regard to the beat • Harmonic Rhythm • how many chord changes (per bar or bars)
Quick Review • Notation • Rhythm • Major Scales • Key Signatures
Building Triads • 1-3-5 • Use your fingers: thumb is Root (1), middle finger is 3, pinky is 5 • These three letters always go together, regardless of what key you are in • The C-triad is the C-triad; it’s made up of C-E-G. Always. • even if it’s built on C# or C-flat, • whether it’s major, minor or diminished; • The A-triad is the A-triad: A-C-E. Always. • Even if you change the “order” i.e. C-E-A or E-A-C • The roman numeral and quality will differ from key to key
Roman Numerals • The Roman Numeral indicates the scale degree that the triad is based on: • In the key of C, the C-triad is I because it is built on the 1st scale degree; • in the key of F, the C-triad is V because it is built on the 5th scale degree; • The Roman Numeral stands for the whole triad (all three notes). • Arabic Numerals indicate • “inversion” or • notes that should be added to the triad
Most important triads • In any key, the most important triads are I, IV, and V • These triads are related by the magic number 5 • Tonic, Subdominant, and Dominant define a key • V almost always brings you back to I
Simple chord progressions that rocked the world • I-IV-V-V • La Bamba • Lucy in the Sky with Diamonds • Twist & Shout • I-I-IV-V • Blitzkrieg Bop • I-IV-I-V • Wimoweh (The Lion Sleeps Tonight) • I-IV-V-IV • Louie Louie • Wild Thing • Great Balls of Fire
Other progressions • “Doo-Wop”/ “I Got Rhythm”/ “Heart and Soul” progression: I-vi-ii-V or I-vi-IV-V • Extended progression: • ex: No woman no cry • I-V-vi-IV || I-IV-I-(V) • 12-bar Blues • “Johnny B. Goode” - Chuck Berry
Building chord progressionsPart 1 – picking your chords • In Jazz and Pop, chords generally play one of three functions: Tonic, Subdominant and Dominant • Chord substitutions are used: • ii and vi can stand in for IV • iii and vi can stand in for I • Tritone substitution for V (for more advanced Jazz cats :-D) There’s another way of looking at this: • “Two out of three ain’t bad” • When triads share two common notes, they can be substituted • Change one note in a triad, and get a different triad • CEG -> CEA; CEG -> BEG; or FAC -> FAD • I becomes vi or iii; IV becomes ii • Any chords related by the magic number 5 move easily to one another • I is 5 notes away from IV; • ii is 5 notes away from V • ii-V-I
Building chord progressionsPart 2 – harmonic rhythm and cadence • Best to think in terms of 4 or 8 bar chunks • Cadence in bar 4 and/or 8 • Half-cadence on V • “Authentic” Cadence: V-I • “Plagal” Cadance: IV-I • “Deceptive: cadence V–(anything except I) • End on I; (probably start on I too) • One or two chords per bar
Building melodies based on chords • Think in terms of 4 or 8 bar chunks • Use longer note values at cadence points • Use antecedent/consequent structure • Use chord tones • More on this shortly • Make a pretty shape • Have a destination • Have a climax point • Make it “singable” • Not too many big leaps • Keep to within an octave or tenth from highest to lowest point • Note repetition is OK to a certain extent