Bm – Si Minor
In music theory, B minor chord is built on B-D#-F# formation: root-minor third-major third. Basic minor chord has a formation B-F#-B-D#-F# from basses to trebles in the guitar.
This chord is derived from a minor triad. In music theory triads are built by three different notes: root-minor third-major third. But in the guitar, generally basic minor chords are expanded by same kind notes that repeat themselves in different octaves. Minor triads may have a function as a supertonic(subdominant parallel), mediant(dominant parallel) or submediant(tonic parallel) besides tonic degree.