I Love You in Si

I Love You in Si

Cole Porter's sophisticated composition features chromatic bridge harmony that introduces Locrian tension over the half-diminished chord and Mixolydian color on the dominant, framing the Bebop Major fluency of the major sections. The bridge's bold harmonic motion is the tune's dramatic centerpiece. Porter's gift for creating maximum harmonic tension within a swinging, singable structure is on full display here.

I Love You in Si

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 C# to F# (ascending perfect fourth), F# to B (ascending perfect fourth), B to D# (ascending major third), D# to G# (ascending perfect fourth), G# to C# (ascending perfect fourth), C# to F# (ascending perfect fourth), F# to F (descending half step), F to A# (ascending perfect fourth), A# to D# (ascending perfect fourth). A half-step bass movement creates a strong leading-tone pull that demands resolution. 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 D# to C# by whole step.

Scales for Improvisation

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.