F♯ minor is a musical key that consists of three sharps: F♯, C♯, and G♯. It is often associated with a somber or melancholic mood, making it a popular choice in various musical genres, including classical, rock, and pop. The scale is built on the notes F♯, G♯, A, B, C♯, D, and E. In terms of harmony, F♯ minor features a natural minor scale, which means it has a specific pattern of whole and half steps. The tonic chord, built on the first note of the scale, is F♯ minor, while the dominant chord is C♯ major. Composers like Johannes Brahms and Frédéric Chopin have utilized this key in their works, showcasing its emotional depth.