D Sharp is a musical note that is one semitone higher than D and one semitone lower than E. It is commonly used in various musical scales and compositions, particularly in Western music. In the context of the piano, it is played by pressing the black key immediately to the right of the D key. In music theory, D Sharp can also be represented as E Flat, which is its enharmonic equivalent. This means that while they are named differently, they sound the same. D Sharp is often found in genres like classical, jazz, and pop music, contributing to the richness of harmonic progressions.