24 Caprices for Violin (Rode)

The 24 Caprices for Violin, Op. 22, composed in the early nineteenth century by Pierre Rode, are a series of 24 caprices for solo violin. They cycle through the circle of fifths, presenting each major key and then its relative minor. They were first published in 1813.
Violinists often use these caprices in training to develop technique.
Caprices.
Caprice No. 16 in B-flat minor.
In the middle of this caprice, the key changes to B-flat major, briefly back to B-flat minor, and then ends in B-flat major.
Caprice No. 24 in D minor.
This caprice ends in D major.