Hello everyone! Today I'm here to talk about the key of D Major, one of the most popular keys in music. It is a major key because it contains the notes D, E, F#, G, A, B, and C#, all of which are major or perfect intervals. It is considered a bright and happy key and is often used in pop and folk music. The D Major scale is also very versatile and can be used in many genres such as jazz, classical, and rock.