If I Should Lose You in C

Ralph Rainger / Leo Robin(1936)swing
Do Re MiC D E
A
C/E
G13
Dm/C
C/E
G13
Dm11
G7sus4

Chord Diagrams — If I Should Lose You in C (Guitar)

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If I Should Lose You 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 A (ascending perfect fourth), A to C (ascending minor third), C to F (ascending perfect fourth), F to G (ascending whole step), G to F (descending whole step), F to C (descending perfect fourth), C to D (ascending whole step), D to G (ascending perfect fourth), G to C (ascending perfect fourth), C to C (ascending unison), C to D (ascending whole step), D to D (ascending unison), D to D (ascending unison), D to B (descending minor third), B to F (ascending tritone), F to D# (descending whole step), D# to G# (ascending perfect fourth), G# to D (ascending tritone), D to G (ascending perfect fourth), G to G (ascending unison). 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 minor 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.

swing4/4 · 33 bars · Form: A

Chords: E7, Am, C7, FMaj7, Gm7, F6, C/E, Dm9, G13, Cdim, C, D9, Dm7, Dm/C, Bm7♭5, F, D♯dim, G♯dim, Dm11, G7sus4, G9.

Scales for Improvisation C bebop, C bebop major.

Diatonic chords: See all chords in the key of C