Breaking the Rules: Sonata Allegro Form
The Romantic Era of music was a time of change. Riding on the heels of the Industrial Revolution, the world of music was evolved, if not revolutionized. The pianoforte took its place over the harpsichord as the superior instrument of its time, enabling greater dynamic expression and tonal quality than ever before possible. The rise of the middle class in society broadened music’s audience from a refined few to the general, musically uneducated public. Composers began focusing on emotion and mood within their compositions, in contrast with the predictable, dainty melodies of Mozart and Haydn. These changes took music beyond the boundaries established with the aristocratic composers of the Classical Era, in particular the guidelines established in Sonata-Allegro Form.
Looking back a century, the Classical Era provided the necessary springboard for the explosion of creativity soon to come. This period in music history marked the creation of the Classical Sonata, a piece of music with three to four “movements” focusing on a solo instrument. The first movement of the sonata almost always followed Sonata-Allegro Form (Sonata Form in short), a seemingly minor innovation that helped develop some of classical music’s most recognizable characteristics. The two great “strictly Classical” composers, Mozart and Haydn, popularized this refined and highly recognizable form of music whilst playing for royal courts and other aristocratic locales. In their compositions, they sought to deviate from the ostentatious clichés of the Baroque era (a la J.S. Bach) while also establishing basic forms, melodies, and harmonies that were easily recognizable and aurally pleasing. Sonata Form was, in effect, the product of these compositions.
Sonata Form in and of itself consists of a complex and surprisingly specific set of rules, leaving little room for variation in length, harmonic progression, and even melody. The form calls for three distinct sections of the given movement: the Exposition, Development, and Recapitulation. The Exposition establishes a primary theme and key (called “home key”), which quickly transitions into a relative key (typically that of the dominant) by means of modulation, development of theme, mood metamorphosis, or a contrasting phrase. The relative key section introduces a second theme, which may vary in style from the primary theme and change keys multiple times. The new key is then confirmed with a closing section, often built off of the first two themes and featuring tonic pedal point (bass repetition of the key’s tonic note).
The Development features motifs based off of the themes found in the Exposition, but it also leaves the most room in the piece for thematic variation. This section may range from a brief modulation to a broad-scale musical climax. It may build off of earlier themes, deviate entirely, or even return to home key for some time. Dynamic and melodic variation is commonly found in this section of the movement. The Development usually concludes with dominant pedal point (bass repetition of the dominant note of the key), leading into the final section of the piece.
The Recapitulation reiterates the Exposition in the tonic key. Some portions of the exposition may be varied melodically, while other portions may be rearranged or removed entirely. Many composers add a Coda (a distinct “ending”) section to the finale of the Recapitulation, which often expands upon the themes established in the Exposition before concluding the piece in the home key.
Astoundingly enough, it was not until the time of the ever-famous Ludwig Van Beethoven (1712-1773) that this cut-and-dry model was seriously challenged. Beethoven was a so-called “transition” composer, a Classical artist who later pioneered the Romantic style. The aforementioned Industrial Revolution facilitated this “transition” by broadening music’s audience to the general public. These people were not aristocrats; rather, they lived in the working-class world where ditsy harmonies lost their appeal quickly. The highly-refined, down-to-a- science Sonata Form was effectively begging to be challenged. Though ahead of his time, Beethoven accepted the challenge, sparking a series of alterations in Sonata Form by expanding upon its preset boundaries.
Romantic composers did not, however, undo the Classical style entirely: rather, artists like Mendelssohn and Brahms built upwards from that which was already in place. The Development of a piece, for example, may switch to the mediant key rather than the dominant; or perhaps it would deviate from the Exposition entirely, exploring broader, more dynamic sounds. This modified style appealed to emotion over format, which in turn appealed to the commoner over the aristocrat. Where the Classical was formal, the Romantic was lyrical; where the Classical was thematic, the Romantic was experimental. Sonata-Allegro Form remains one of the most widely recognizable characteristics of classical music, and yet the changes it experienced resulted in the formation of the Romantic style, one that plunged music as a whole into a whole new world of expression.
Bibliography
Eakle, Kit. “Sonata Allegro Form.” <http://www.musickit.com/resources/son-allegro.html>
Schmidt-Jones, Catherine. “The Music of the Romantic Era.” <http://cnx.org/content/m11606/latest/>
Green, Aaron. “Classical Piano Music Styles.” <http://classicalmusic.about.com/od/classicalmusic101/p/classicalpiano.htm>