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Unrequited in C
Key of C
With no sharps or flats, C major is the theoretical home base on guitar. The open G, B, and high E strings all belong to the C major chord, creating natural sustain. C is a beginner-level key on guitar because the open B and high E strings ring within the scale, and every basic chord uses familiar open shapes. Beginners will find this key approachable since most chords use open voicings with minimal stretching.
Voice Leading
The bass line moves through E to C (descending major third), C to A (descending minor third), A to B (ascending whole step), B to B (ascending unison), B to C (ascending half step), C to G (descending perfect fourth), G to A (ascending whole step), A to A (ascending unison), A to D (ascending perfect fourth), D to D (ascending unison), D to C (descending whole step), C to D# (ascending minor third), D# to A# (descending perfect fourth), A# to D (ascending major third), D to G (ascending perfect fourth), G to G# (ascending half step), G# to B (ascending minor third), B to F (ascending tritone), F to F (ascending unison), F to A# (ascending perfect fourth), A# to F# (descending major third), F# to A (ascending minor third), A to C# (ascending major third), C# to D# (ascending whole step), D# to D# (ascending unison), D# to G# (ascending perfect fourth), G# to G# (ascending unison), G# to C# (ascending perfect fourth), C# to A (descending major third), A to F# (descending minor third), F# to E (descending whole step), E to C (descending major third), C to B (descending half step), B to E (ascending perfect fourth), E to E (ascending unison), E to D# (descending half step), D# to G# (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 G# to E by major third.
Scales for Improvisation
C 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, C Mixolydian adds the flat seventh for an authentic blues-rock edge.