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Windows in D
Chick Corea's post-bop composition layers Lydian Dominant tension and Bebop Major clarity over a fluid D architecture. Dorian inflections soften the dominant color and give improvisers multiple entry points for expressive phrase building. Study the Dm7 – Bm7b5 – E7 – Am7 – F7sus4 – Gmaj7#11 – B7 – C7 – Gmaj7 – Gmaj7/D# – Em7 – Em7/B – C#m7b5 – C#m7b5/Ab – F#7/G – F#7 – Bm7 – Bm7/Gb – E7/F – F#m7 – D#7#11 – Dmaj7 changes to develop sophisticated vocabulary for post-bop major/dominant modal interplay.
Key of D
D major is one of guitar's most resonant keys. The open D string acts as a droning root, and the open A string provides the fifth. This gives D-based strumming a wide, ringing quality that flatpicks and fingerpicks love. D is a beginner-level key on guitar because the open D and A strings provide a powerful bass foundation, and the open high E is the 2nd scale degree adding brightness. Beginners will find this key approachable since most chords use open voicings with minimal stretching.
Voice Leading
The bass line moves through D to B (descending minor third), B to E (ascending perfect fourth), E to A (ascending perfect fourth), A to F (descending major third), F to G (ascending whole step), G to B (ascending major third), B to C (ascending half step), C to G (descending perfect fourth), G to G (ascending unison), G to E (descending minor third), E to E (ascending unison), E to C# (descending minor third), C# to C# (ascending unison), C# to F# (ascending perfect fourth), F# to F# (ascending unison), F# to B (ascending perfect fourth), B to B (ascending unison), B to E (ascending perfect fourth), E to F# (ascending whole step), F# to D# (descending minor third), D# to D (descending half step). 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 D by unison.
Scales for Improvisation
D 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, D Mixolydian adds the flat seventh for an authentic blues-rock edge.