Introduction to Mozart's Horn Concerto No. 4 (3rd Movement)

Welcome to your study notes for Mozart's Horn Concerto No. 4 in E-flat major, K. 495 (Third Movement: Rondo: Allegro vivace)! This set work is a core part of Component 3: Listening and Appraising under Area of Study 1: Western Classical Music (1600–1910) for your CCEA GCSE Music exam.

In this movement, Mozart shows off the brilliant, playful, and energetic character of the horn. By understanding the historical context, the unique instrument Mozart was writing for, the musical structure, and key musical elements, you will be well prepared to tackle any exam question on this piece.

Key Takeaway: This movement is a lively, hunting-style Rondo in 6/8 time and in the key of E-flat major, composed during the Classical period.

1. Context and Background

• Composer: Wolfgang Amadeus Mozart (1756–1791).
• Era / Period: Classical Period (approx. 1750–1820).
• Date of Composition: 1786 in Vienna.
• Full Catalogue Title: Horn Concerto No. 4 in E-flat major, K. 495, third movement (Rondo: Allegro vivace). The 'K' stands for the Köchel catalogue, which lists Mozart's works in chronological order.
• Dedication & Performer: Mozart wrote this concerto for his lifelong friend, the horn virtuoso Joseph Leutgeb. Mozart was famous for teasing Leutgeb playfully, even writing the original manuscript score in a colourful mix of red, green, blue, and black inks!

Did you know? A concerto is a large-scale piece of music written for a solo instrument accompanied by an orchestra. In this piece, the solo horn is the star of the show.

Key Takeaway: Written in Vienna in 1786 for the virtuoso horn player Joseph Leutgeb, this piece captures the balanced, witty, and elegant style of the Classical era.

2. The Solo Instrument: The Natural Horn

Don't worry if brass instruments seem confusing at first—here is the most crucial historical fact to remember for your exam:

Mozart did NOT write for the modern French horn with valves! Valves had not been invented yet. Instead, he wrote for the Natural Horn (also known as the hand horn).

How did the Natural Horn work?

• No Valves: The natural horn was simply a coiled brass tube with a flared bell and a mouthpiece.
• The Harmonic Series: Without valves, a player could only produce the natural notes of the harmonic series purely by changing their lip tension and air pressure (embouchure).
• Crooks: To play in different keys, players inserted different lengths of tubing called crooks.
• Hand-Stopping: To play notes outside the harmonic series (such as chromatic notes or stepwise scale passages), the player inserted their right hand into the bell of the horn. By partially covering the opening, they could bend the pitch up or down. However, this altered the tone quality, making some notes sound slightly muffled or brassy.

Memory Trick: Think of the natural horn like a bugle—it naturally plays open fanfare notes, but the performer must use their hand inside the bell to create the in-between notes!

Key Takeaway: The natural horn had no valves. Mozart's soloist relied on lip control, crooks, and hand-stopping in the bell to play melodies and scales.

3. Instrumentation and Orchestral Scoring

Mozart uses a standard Classical chamber orchestra to accompany the solo horn. Notice how balanced and transparent the ensemble is:

• Solo Instrument: Solo Natural Horn in E-flat.
• Woodwind: 2 Oboes.
• Brass: 2 Orchestral Horns in E-flat (also known as ripieno horns).
• Strings: 1st Violins, 2nd Violins, Violas, Cellos, and Double Basses.

What is NOT in the orchestra?

• No Basso Continuo: In the Classical period, the harpsichord continuo of the Baroque era fell out of use. The orchestra provides all the harmony.
• No Flutes, Clarinets, Trumpets, Trombones, or Timpani: Mozart kept the orchestration light so the natural horn could easily be heard above the orchestra.

Key Takeaway: Scoring is for solo horn in E-flat accompanied by 2 oboes, 2 horns, and strings (Violins 1 & 2, Viola, Cello, Double Bass).

4. Metre, Tempo, and the "Hunt Topic" (Chasse)

• Tempo: Allegro vivace (fast and lively).
• Time Signature / Metre: 6/8 compound duple time (two main dotted-crotchet beats per bar, each dividing into three quavers: 1-2-3, 4-5-6).
• The "Hunt Topic" (Chasse): In the 18th century, horns were traditionally associated with royal hunting parties. Mozart uses the 6/8 metre to mimic the galloping rhythm of horses and the lively calls of hunting horns. You will hear prominent fanfares, triadic shapes, and arpeggios throughout the movement.

Key Takeaway: The movement is in 6/8 compound duple time (Allegro vivace) and uses the traditional "hunting horn" idiom (chasse) with galloping rhythms and triadic calls.

5. Structure: Rondo Form

The movement is built using Rondo Form. In a rondo, a main recurring theme (called the Refrain or A section) alternates with contrasting sections (called Episodes).

The overall structure follows the pattern: A – B – A' – C – A'' – Coda

Breakdown of the Sections:

• Refrain (A): Starts in the tonic key of E-flat major. The solo horn introduces the famous main theme, which is then repeated by the full orchestra (tutti).
• Episode 1 (B): Moves to the dominant key of B-flat major. Features new melodic material and virtuosic runs for the soloist.
• Refrain Return (A'): A return of the main refrain in E-flat major.
• Episode 2 (C): A contrasting central episode that explores related keys, including the relative minor (C minor), providing harmonic tension and drama before returning to the tonic.
• Refrain Return (A''): The main theme returns once more in E-flat major.
• Coda: The final concluding section in E-flat major. It brings the movement to an exciting finish with energetic fanfare motifs and strong perfect cadences.

Analogy: Think of Rondo form like a multi-decker sandwich where the bread is theme A: Bread (A), Filling 1 (B), Bread (A), Filling 2 (C), Bread (A), and a toothpick to hold it together (Coda)!

Key Takeaway: The movement is in Rondo form (A–B–A'–C–A''–Coda), constantly returning to the main E-flat major refrain between contrasting episodes.

6. Melodic and Harmonic Features

Mozart's music is a masterclass in Classical balance, symmetry, and clarity:

• Periodic Phrasing: Themes are built with balanced, regular 4-bar and 8-bar phrases. They often work as question-and-answer pairs (antecedent and consequent phrases).
• Diatonic Harmony: The harmony is functional and largely diatonic, relying heavily on primary chords (Chords I, IV, and V).
• Cadences: Phrases are clearly marked by standard Classical cadences, including imperfect cadences (sounding unfinished on chord V) and perfect cadences (V to I, sounding complete).
• Melodic Contour: The solo horn line alternates between bright triadic horn calls/arpeggios (natural notes) and rapid scalic passages (using hand-stopping).

Key Takeaway: Melodies use regular 4- and 8-bar question-and-answer phrasing with clear diatonic harmony, primary triads, and definitive cadences.

7. Texture and Dynamics

• Texture: The predominant texture is melody and accompaniment (homophonic). The solo horn carries the main melody while the strings provide a light accompaniment (often with repeated chords or light rhythmic figures).
• Solo vs. Tutti Contrast: A key feature of the concerto genre is the contrast between the solo horn playing with light accompaniment and the full orchestra (tutti) playing powerful answering phrases.
• Dynamics: Features clear Classical dynamic contrasts between soft (piano / p) accompanying passages and loud (forte / f) orchestral statements and cadential climaxes.

Key Takeaway: The piece uses a homophonic (melody and accompaniment) texture with sharp contrasts between delicate solo passages and loud tutti sections.

8. Common Exam Traps & Pitfalls to Avoid

Be careful not to lose easy marks in the exam by keeping these common misconceptions in mind:

• Mistake 1: Mentioning valves on the horn.
Correction: Mozart wrote for the natural horn without valves. Pitch adjustments were made using lip tension and hand-stopping.

• Mistake 2: Confusing the movement form.
Correction: The 3rd movement is a Rondo in 6/8, NOT a 1st-movement Sonata Form in 4/4, and NOT a slow 2nd-movement Romance.

• Mistake 3: Getting the time signature wrong.
Correction: It is in 6/8 compound duple time (a hunting lilt), not 2/4 with triplets or 3/4.

• Mistake 4: Adding instruments Mozart did not use.
Correction: There are no flutes, clarinets, trumpets, trombones, tubas, or timpani in this movement. The orchestra consists only of 2 oboes, 2 horns, and strings.

• Mistake 5: Thinking all sections are in E-flat major.
Correction: While the main Refrain (A) is in E-flat major, Episode 1 modulates to the dominant (B-flat major) and Episode 2 explores related keys like the relative minor (C minor).

9. Quick Revision Summary Checklist

Use this checklist for rapid review before your exam:

• Composer: W. A. Mozart (Classical Period, 1786).
• Solo Instrument: Solo Natural Horn in E-flat (hand-stopping, no valves).
• Orchestra: 2 Oboes, 2 Horns in E-flat, Strings (Vln 1, Vln 2, Vla, Vc, Db). No continuo.
• Form: Rondo Form (A – B – A' – C – A'' – Coda).
• Key: E-flat major (modulates to B-flat major in Episode 1, C minor in Episode 2).
• Metre & Tempo: Allegro vivace, 6/8 time (galloping hunting rhythm / chasse topic).
• Phrasing & Texture: Balanced 4- and 8-bar periodic phrasing; homophonic (melody and accompaniment); solo vs. tutti contrasts.