My Boogie-Woogie take on Chopin's first Etude, previously known as the Waterfall, which was inspired by Bach's first Prelude. The right hand, where the technical challenge resides, is left (mostly) intact, but the new left hand boogie-woogie line adds a new twist, and a new groove. The beautiful middle section features a new melody in the left hand, à la Rachmaninov.