There is no such thing as B major. There is B minor and B flat major. The subdominant triad of B minor ( I'm pretty sure) is E minor.
A subdominant triad (Grade 5 Theory) is a triad built on the scale degree IV (four)
In a major key, the triad built on the 7th scale degree is diminished. Using C major as an example, the triad on the 7th is B D F. B to D is a minor 3rd, as is D to F, so B to F is a diminished 5th.
G,b,d
The augmented triad does not appear in any major or natural minor scales.
The note "A"
The subdominant triad of Eb major is the Ab major triad.
The most common quality of the subdominant triad in a major key is major.
Subdominant. Its triad is major.
A subdominant triad (Grade 5 Theory) is a triad built on the scale degree IV (four)
F Major
The subdominant note of E-flat minor is A-flat.
In music theory, the tonic, subdominant, and dominant primary triads are represented by the Roman numerals I, IV, and V, respectively, in a given key. For example, in the key of C major, the tonic triad is C (I), the subdominant triad is F (IV), and the dominant triad is G (V). These triads play crucial roles in establishing harmony and tension within musical compositions.
The subdominant in any major scale is the fourth note. So, in C major, the subdominant is the F.
The subdominant in a scale is the 4th, which in the key of B-flat major is E-flat.
b major
C major triad : C - E - GG major triad : G - B - DD major triad : D - F# - AA major triad: A - C# - EE major triad : E - G# - BB major triad : B - D# - FC# major triad: C# - E# - G#F# major triad : F# - A# - C#Cb major triad : Cb - Eb - GGb major triad : Gb - Bb - DbDb major triad : Db - F - AbAb major triad : Ab - C - EbEb major triad : Eb - G - BbBb major triad : Bb - D - FF major triad : F - A - CA natural minor triad : A - C - EE natural minor triad : E - G - BB natural minor triad : B - D - F#F# natural minor triad : F# - A - C#C# natural minor triad : C# - E - G#A# natural minor triad : A# - C# - EG# natural minor triad : G# - B - D#D# natural minor triad : D# - F# - A#Eb natural minor triad : Eb - Gb - BbAb natural minor triad : Ab - C -EbBb natural minor triad : Bb - Db - FD natural minor triad : D - F - AG natural minor triad : G - Bb - DC natural minor triad : C - Eb - GF natural minor triad : F - Ab - C
The subdominant note is D in an A major scale