D# major is a musical key that consists of the notes D#, F## (which is G), and A# in its triad form. It is often used in various genres of music, including classical, jazz, and pop. The key signature of D# major has six sharps, making it one of the more complex keys to play on instruments like the piano. In terms of scale, the D# major scale includes the notes D#, E#, F##, G#, A#, B#, and C##. This scale is frequently utilized in compositions that require a bright and uplifting sound. Composers like Ludwig van Beethoven and Frédéric Chopin have incorporated D# major in their works, showcasing its unique tonal qualities.