'''String Quartet No. 2 in G major''', op. 18, No. 2, was written by Ludwig van Beethoven between 1798 and 1800 and published in 1801.
It consists of four movements:
#Adagio cantabile - Allegro - Tempo I
#Allegro molto, quasi presto
Of the Op. 18 string quartets, this one is the most grounded in 18th-century musical tradition.Winter + Martin, p. 155 According to Steinberg, "In German-speaking countries, the graceful curve of the first violin's opening phrase has earned the work the nickname of Komplimentier-Quartett, which might be translated as 'quartet of bows and curtseys'."Winter + Martin, p. 156
The nickname may have originated from one of Haydn's last string quartets written about the same time (Op. 77, No. 1; 1799), which was also known as the ''Komplimentier-Quartett''. Haydn was Beethoven's teacher at the time, and there are similarities in style between the two quartets. They are also both in the key of G major.[http://www.banatblog.eu/streichquartette-von-joseph-haydn The string quartets of Joseph Haydn.] Banat Blog (''in German''), 19 April 2009. Retrieved 10 September 2011.
After he finished the quartet, Beethoven was not satisfied with the second movement and wrote a replacement. Sketches of the original slow movement survive and a complete version has been reconstructed by musicologist Barry Cooper.[http://www.bbc.co.uk/news/entertainment-arts-15073541 'Lost' Beethoven work to be aired] BBC News, 28 September 2011, Retrieved 12 October 2011. It was performed publicly, possibly for the first time, by the Quatuor Danel in the Cosmo Rodewald Concert Hall at the Martin Harris Centre, University of Manchester, on 30 September 2011.