Which mode is known as the second mode in the musical modes?

The second mode in the musical modes is the Dorian mode. This mode is derived from the second scale degree of the major scale. For example, if we take the C major scale (C, D, E, F, G, A, B), the Dorian mode starts on D and consists of the notes D, E, F, G, A, B, C. The characteristic feature of the Dorian mode is its minor quality with a raised sixth degree, which gives it a distinctive sound that differs from the natural minor scale.

Understanding the Dorian mode is important for various musical contexts, as it offers a unique harmonic framework that is extensively used in jazz, blues, and folk music. Its structure allows for a mix of minor and major qualities, making it versatile for composition and improvisation.