15-Minute Haydn Sonata in G Major Analysis: Form & Harmony

Diatonic harmony is built using only the seven notes of a major scale without accidentals. In C major, stacking thirds produces: I (C major), ii (D minor), iii (E minor), IV (F major), V (G major), vi (A minor), vii° (B diminished). Each chord receives a Roman numeral based on its scale degree. In minor keys, the pattern shifts: i (minor), ii° (diminished), III (major), iv (minor), v (minor), VI (major), VII (major). When transposing songs, Roman numerals remain unchanged because they represent relative positions within the scale, not absolute pitches. Inversions are indicated by numbers (1, 2, 3) or by specifying the bass note. This system provides a universal language for analyzing harmony across all keys and forms the foundation for understanding more complex musical structures.

This comprehensive lesson covers four diatonic chord progressions less commonly used in popular music. The She Loves You progression (I-6-3-5) uses the third chord, which is less frequent in progressions, giving it distinctive character. The Starlight progression (I-2-6-4) replaces the five chord with a two chord in the classic 5-6-4 pattern. The Jolene progression (i-3-7-1 in minor) creates clear cadence by returning to home. The Polly progression (i-3-7-6 in minor) differs by ending on the six chord. The lesson also covers two approaches to Roman numeral analysis in minor keys: relating to the major scale with flat symbols, or relating directly to the minor key. The practical approach for chord charts is to use Roman numerals relative to the major scale regardless of tonality, avoiding ambiguity when songs modulate between major and minor keys.

This section explains how to analyze chord progressions using Roman numerals, a universal system for describing harmonic relationships. In any major key, seven diatonic chords exist: I, IV, V are major; ii, iii, vi are minor; vii° is diminished. For example, in C major: C (I), F (IV), G (V) are major; Dm (ii), Em (iii), Am (vi) are minor; Bdim (vii°) is diminished. This system allows musicians to describe progressions like 'I-VI-IV-V' universally across all keys. The video demonstrates this with Tom Petty's 'Learning to Fly,' showing how F-C-Am-G progression translates to IV-I-vi-V in C major. Understanding this framework enables meaningful musical discussions and deeper appreciation of song structures.

Roman numeral analysis is a notation system for documenting musical progressions. Major chords use uppercase Roman numerals (I, IV, V), minor chords use lowercase (ii, iii, vi), and diminished chords are marked with a circle or asterisk. This system allows musicians to understand chord function and structure. The video demonstrates analyzing progressions in both major and minor keys, showing how the same chord sequence creates different emotional effects depending on the key.

This segment covers three titans of the Classical era who fundamentally shaped Western music. Mozart (1756-1791) was born in Salzburg into a musical family, reading music by three and composing by five. His European tour charmed royalty, and he composed over 600 works including operas (Figaro, Don Giovanni), symphonies, and concertos. Beethoven (1770-1827) was born in Bonn, subjected to grueling lessons, and despite severe hearing loss, composed revolutionary works including the Eroica Symphony and Ninth Symphony with Ode to Joy. Bach (1685-1750) was born in Eisenach, orphaned at ten, and composed hundreds of cantatas, the St. Matthew Passion, and the Art of Fugue. Together, they defined the classical era and ignited romanticism, leaving music that makes emperors laugh and peasants weep.

The Classical period in Western music spans approximately 1730 to 1820 and is characterized by the works of key composers including Joseph Haydn, Wolfgang Amadeus Mozart, Ludwig van Beethoven, and Franz Schubert. Other notable figures from this era are Luigi Boccherini, Muzio Clementi, and Christoph Willibald Gluck. Beethoven and Schubert are often regarded as transitional figures between the Classical and Romantic periods, as is Carl Maria von Weber. The period is also known as the era of Viennese Classicism, as Gluck, Mozart, Haydn, and Beethoven all worked in Vienna, and Schubert was born there. The video features extended excerpts from major compositions of these composers, including Haydn’s Cello Concerto No. 1 in C Major, Boccherini’s Quintetto d’archi, Mozart’s Symphonies No. 36 “Linz,” No. 38 “Prague,” No. 41 “Jupiter,” No. 40 in G Minor, the overture to Die Zauberflöte, and Eine kleine Nachtmusik; Beethoven’s Symphony No. 7 “Allegretto,” Symphony No. 6 “Pastoral,” Moonlight Sonata, and Für Elise; Weber’s Piano Concerto No. 2; Clementi’s Piano Sonata in E-Flat Major; and Schubert’s “Unfinished” Symphony and Piano Sonata No. 13. These selections exemplify the structural clarity, balance, and expressive range typical of the Classical style. The video serves as a curated listening experience rather than an analytical lecture.

The Classical era witnessed some of the most sophisticated applications of monophonic writing. Mozart developed monophonic themes throughout entire pieces, using transitional monody, tremolando effects, and pickup phrases. Haydn created playful skirando effects through contrapuntal division within single lines, using pedal point dialogues and changing articulations. Beethoven pioneered interlocked arpeggios, modal development through Neapolitan scales, compound octaves, interruption techniques, and dramatic octave presentations. Each composer demonstrated that monody could achieve sophisticated complexity through careful melodic construction, showing that monody serves as both a standalone statement and a contrapuntal building block.

The Classical Era (18th century) represents a pivotal period in Western music history, characterized by a return to simplicity and ancient Greek and Roman philosophical principles, departing from Baroque complexity. This era emerged after the Middle Ages' religious music, Renaissance's secular shift, and Baroque's aristocratic complexity. The Classical Era flourished from the mid-18th century to its peak at the century's end, followed by Romanticism and Modern music. Key characteristics included established musical forms (sonata, symphony, concerto, string quartet), controlled emotional expression, and clarity. The Golden Trio—Haydn, Mozart, and Beethoven—developed Carl Philipp Emanuel Bach's methodology, with Beethoven bridging Classical and Romantic eras despite deafness. Performance techniques evolved with dynamic variations, tempo changes, and orchestral coloring.

The Classical era began around 1700, coinciding with the age of ships, cannons, and pirates. An Austrian named Philipp von Kilian invented the symphony, which involves having more instruments than a typical ensemble. Haydn, known as the 'penis vinegar washer,' helped educate young composers. This era emphasized balance, clarity, and formal structure in musical composition, representing a departure from the complexity of the Baroque period and establishing the foundations for later classical music.

A cadence is a two-chord chord progression that serves as musical punctuation to resolve harmonic passages. The four main types are: (1) Perfect Cadence (V-I), which provides a definitive sense of resolution and finality, commonly found in classical and jazz music; (2) Plagal Cadence (IV-I), which offers a softer, more subdued resolution often used for the word 'amen'; (3) Interrupted/Deceptive Cadence (V-vi), which unexpectedly redirects resolution away from the tonic chord; and (4) Imperfect/Half Cadence (V-), which leaves the progression unresolved. Additional variations include the minor plagal cadence (iv-i) and modern examples like the Super Mario Cadence (♭VI-♭VII-I). The terminology differs between UK and US traditions, with the UK calling any V-I cadence 'perfect' while the US reserves 'perfect' for a specific voicing called the Perfect Authentic Cadence.

A cadence is a two-chord progression used at the end of a musical phrase, and there are four types: Perfect (or Authentic), Plagal, Imperfect (or Half), and Interrupted (or Deceptive). A Perfect cadence progresses from chord V to chord I, such as G to C in C major, and creates a sense of finality. A Plagal cadence moves from chord IV to chord I, like F to C in C major, and is often described as softer or more gentle in resolution. An Imperfect cadence, also called a Half cadence, ends on chord V and may begin on chord I, II, or IV—for example, Dm to G in C major—producing an unfinished or suspended feeling. An Interrupted or Deceptive cadence surprises the listener by moving from chord V to chord VI instead of resolving to chord I, such as G to Am in C major, creating unexpected tension. Cadences are visually marked on sheet music with a horizontal line between the two chords. They are essential in composition for shaping the structure of musical phrases: Perfect and Plagal cadences signal completion, while Imperfect and Interrupted cadences suggest continuation or unresolved motion. Understanding these progressions helps composers control the emotional and structural flow of their music by choosing appropriate endings for phrases.

A cadence is the harmonic punctuation that ends musical phrases, and understanding different cadence types allows musicians to create more varied and expressive compositions. The ten main cadences include: (1) Perfect Authentic Cadence (V-I resolution, most conclusive), (2) Imperfect Authentic Cadence (V-I with inverted tonic chord, less conclusive), (3) Half Cadence (ending on the dominant chord V, creating unresolved tension), (4) Major Plagal Cadence (IV-I, historically used in church music), (5) Minor Plagal Cadence (more modern, used in pop music), (6) Interrupted/Deceptive Cadence (V resolving to VI instead of I, defying expectations), (7) Picardy Cadence (minor key ending with major tonic chord), (8) Action Cadence (♭6-♭7-I in minor, used in action music), (9) Andalusian Cadence (i-♭VII-♭VI-V in minor, from flamenco tradition), and (10) Key Change Cadence (sustained IVsus4 resolving to V, then modulating to new key). Each cadence serves a different purpose in musical phrasing, from providing strong conclusions to creating momentum and surprise.

Cadences are harmonic formulas that finalize musical works or sections, marking breathing points and establishing tonality. Three main types exist based on tonal regions: the plagal cadence (subdominant to tonic, strongest degrees 4-1), the authentic cadence (dominant to tonic, strongest degrees 5-1), and the perfect cadence (subdominant to dominant to tonic, strongest degrees 4-5-1). Each can be substituted with other degrees within their respective regions. The perfect cadence provides the strongest resolution, followed by authentic, then plagal. A perfect cadence can be strengthened by adding a first-inversion tonic chord (6/4) before the dominant, creating an appoggiatura effect that functions as both tonic and dominant simultaneously.

Three cadence types: perfect authentic cadence (most conclusive, bass 5-1, top line resolves to tonic), imperfect authentic cadence (top line resolves to third, less conclusive like a comma), and half cadence (ends on dominant triad, open ending like suspension points). Modulating sentences modulate to fifth degree (major) or third degree (minor). Period antecedents use question-answer pattern (two-bar basic idea + contrasting idea) or mini sentence (compressed 4-bar version). Consequents must start with recognizable basic idea and end on strong cadence. Variations include anti-period (reversed cadence order) and contrasting period (missing consequent restatement).