B minor is a musical key that is often associated with a somber or melancholic mood. It consists of the notes B, D, and F♯, forming a minor triad. This key is commonly used in various genres, including classical, rock, and pop music, to evoke emotional depth. In terms of its scale, the B minor scale includes the notes B, C♯, D, E, F♯, G, and A. The key signature for B minor has two sharps, which are F♯ and C♯. Many famous compositions, such as Brahms' Symphony No. 1, utilize this key to create a rich, expressive sound.