Noter
Original
Beethoven, Ludwig van. Violin Sonata No.4. Op.23. Beethoven, Ludwig van. 1 Piano, 4 Hands. duet. Ulrich, Hugo. Main sheet music.
Oversettelse
Beethoven, Ludwig van. Fiolinsonate nr.4. Op.23. Beethoven, Ludwig van. 1 Piano, 4 Hands. duett. Ulrich, Hugo. Hoved notene.