The String Quartet No. 14 in C♯ minor, Op. 131, was completed by Ludwig van Beethoven in 1826. It is the last-composed of a trio of string quartets, written in the order Opp. 132, 130, 131.
Beethoven's sketches for his Op. 131 quartet in the British Library
Ludwig van Beethoven's late string quartets are:
String Quartet No. 14 (Beethoven)
…last-composed of a trio of string quartets, written in the order Opp. 132, 130 (with the Große Fuge ending), 131. It was Beethoven's favourite of the late quartets: he is quoted as remarking to a friend that he would find "a new manner of part-writing and, thank God, less lack of imagination than before". It is…
Manuscript of Beethoven's Große Fuge, arranged for piano four hands