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It's Been A Long Long Time in D

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 D (ascending unison), D to D (ascending unison), D to D# (ascending half step), D# to A (ascending tritone), A to E (descending perfect fourth), E to B (descending perfect fourth), B to A (descending whole step), A to F# (descending minor third), F# to B (ascending perfect fourth), B to G (descending major third), G to A# (ascending minor third), A# to F# (descending major third), F# to D# (descending minor third). 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 half step.

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.

ballad4/4 · 16 bars · Form: ABA

Chords: D, Dmaj7, D6, D♯dim7, A7, Em7, B7, A7♯5, F♯m7♭5, B7♭9, Gm6, A♯7, F♯m7, D♯7.

Scales for Improvisation D bebop, D bebop major.

Diatonic chords: See all chords in the key of D