Among Beethoven's sketches for his quartett op. 130 a very beautiful Adagio tune was found by B.Cooper. I liked this theme so much that in the last 2 weeks I wrote a variation movement for string quartett on this.
It starts with the naked theme, then it is repeated with an added bass line and a second part from me, then 7 variations follow:
www.gerdprengel.de/Beeth_quartett_sketch_1825_variations.mp3
www.gerdprengel.de/Beeth_quartett_sketch_1825_variations.pdf
I hope it will speak to you ... any suggestions for improvement?