Ludwig van Beethoven (1770 – 1827) was a German composer and pianist. Beethoven remains one of the most admired composers in the history of Western music; his works rank among the most performed of the classical music repertoire and span the transition from the Classical period to the Romantic era in classical music. His career has conventionally been divided into early, middle, and late periods. His early period, during which he forged his craft, is typically considered to have lasted until 1802. From 1802 to around 1812, his middle period showed an individual development from the styles of Joseph Haydn and Wolfgang Amadeus Mozart, and is sometimes characterized as heroic. During this time, he began to grow increasingly deaf. In his late period, from 1812 to 1827, he extended his innovations in musical form and expression.

Beethoven was born in Bonn. His musical talent was obvious at an early age. He was initially harshly and intensively taught by his father, Johann van Beethoven. Beethoven was later taught by the composer and conductor Christian Gottlob Neefe, under whose tutelage he published his first work, a set of keyboard variations, in 1783. He found relief from a dysfunctional home life with the family of Helene von Breuning, whose children he loved, befriended, and taught piano. At age 21, he moved to Vienna, which subsequently became his base, and studied composition with Haydn. Beethoven then gained a reputation as a virtuoso pianist, and was soon patronised by Karl Alois, Prince Lichnowsky for compositions, which resulted in his three Opus 1 piano trios (the earliest works to which he accorded an opus number) in 1795.

The Piano Sonata No. 19 in G minor, Op. 49, No. 1, and Piano Sonata No. 20 in G major, Op. 49, No. 2, are short sonatas by Ludwig van Beethoven, published in 1805 (although the works were actually composed a decade earlier in early to mid 1797). Both works are approximately eight minutes in length, and are split into two movements. These sonatas are referred to as the Leichte Sonaten to be given to his friends and students.

The Piano Sonata No. 20 was possibly written around the time Beethoven composed the Third and Fourth sonatas, but because it was published in Vienna in 1805, nearly a decade after it was actually written, it was assigned then-current opus and sonata numbers, which classified it alongside works from the composer's middle period. Very similar circumstances caused Beethoven's Piano Concerto No. 2 to appear as his second, even though it predated the first.

Beethoven often suppressed works in his early years, either revising them later for publication or determining that they were not fit. In fact, he withheld many early works from publication for life. In the case of these two sonatas, it was Kaspar van Beethoven, the composer's brother, who decided they were worthy of publication. Against the composer's will, he presented them to a publishing house, thus allowing posterity to hear works that might otherwise have been lost or destroyed.

Source: Wikipedia (https://en.wikipedia.org/wiki/Piano_Sonatas_Nos._19_an d_20_(Beethoven)).

Although originally written for Solo Piano, I created this Arrangement of the Sonata in G Major (Op. 49 No. 2) for String Quartet (2 Violins, Viola & Cello).