Claude Debussy(1862-1918) was a French composer who, along with Ravel, was most recognised for his impressionist music. As one of the most influential composers of the 19th and early 20th centuries, his use of non-traditional scales, bitonal and parallel chords as well as other unusual music tonalities has inspired many other composers.

WikipediaClaude Debussy
The second on Debussy's Arabesques is faster, brighter and more lively. Although the two works are usually put in the '20th Century' classical music period, they are now being increasingly seen as a separate impressionistic style popular with European composers.