Piano sheet music and recordings. This piece is from Twelve Etudes (Book II) by Claude Debussy: Pour les accords No. 12 (published in 1915) . Level 8+, Period: Impressionism Pour les accords No. 12, by the impressionism composer Claude Debussy. This piano piece was initially published in the year 1915 and is included in Twelve Etudes (Book II) by Debussy.