Si Royal Road (J-Pop)
IV – V – iii – vi progression in Si major
Si Royal Road (J-Pop) — IV – V – iii – vi
The B IV–V–iii–vi Royal Road progression (E – F# – D#m – G#m) dominates J-Pop and anime soundtracks through its sense of longing and forward motion. The Mixolydian mode colors the IV–V movement; Aeolian ties the iii–vi resolution together. Minor Pentatonic phrases work beautifully over the darker second half. With seventh voicings (EMaj7 – F#7 – D#m7 – G#m7), the melodic depth matches the emotional weight of the genre.
Playing in Si major
B major mixes barre and open elements. The B chord itself is a barre at fret 2, but E and A are comfortable open chords forming the IV and V. The open B string rings as the root, allowing creative drone-based arrangements. B is a intermediate-level key on guitar because the open B string rings as the root and the open E strings provide the 4th — useful for sus4 voicings and drone effects. This key mixes open and barre shapes, making it a good intermediate challenge that builds fretboard fluency.
Voice Leading
The bass line moves through E to F# (ascending whole step), F# to D# (descending minor third), D# to G# (ascending perfect fourth). The root motion by larger intervals (fourths and fifths) gives each chord change a strong, decisive character. When the progression loops, the bass returns from G# to E by major third.
Capo Transposition
To play in B using familiar open chords: capo 2 with open A shapes; capo 4 with open G shapes; capo 7 with open E shapes. Choose the capo position that gives you the voicings you prefer — lower capo positions produce a fuller sound, while higher positions create a brighter, mandolin-like timbre.
Scales for Soloing
B major pentatonic works because every note is either a chord tone or a safe passing tone — there are no avoid notes. For soloing, this means you can play freely without clashing. Over dominant seventh chords, B Mixolydian adds the flat seventh for an authentic blues-rock edge.
Strumming Pattern
Use D-DU-UDU at 100-120 BPM for a standard pop strum. Accent beats 2 and 4 for a backbeat feel. Vary dynamics between verse (lighter) and chorus (stronger) to build energy.