Por una Cabeza in F
Por una Cabeza in F
Carlos Gardel y Alfredo Le Pera compusieron 'Por una Cabeza' en 1935 para la película 'Tango Bar'. Es el tango más reconocible del mundo no rioplatense: 'Scent of a Woman' (Al Pacino, 1992) lo inmortalizó en Hollywood y desde entonces es sinónimo de seducción y elegancia argentina. La melodía en Do mayor, con ese bandoneón que suspira, ha cruzado todos los idiomas y todas las pistas de baile del planeta.
Por una Cabeza in F
F major is the gateway to barre chords. While F itself requires a full barre at fret 1, the remaining diatonic chords (C, Dm, Am, G, Bb) mix open and barre shapes. The open high E acts as Fmaj7's seventh, adding unexpected richness. F is a intermediate-level key on guitar because the open high E string is the major seventh of F, creating a lush Fmaj7 resonance even in basic shapes, but the F barre chord itself is the first big hurdle for beginners. This key mixes open and barre shapes, making it a good intermediate challenge that builds fretboard fluency.
Voice Leading
The bass line moves through F to C (descending perfect fourth), C to D (ascending whole step), D to A# (descending major third), A# to A (descending half step), A to G (descending whole step). A half-step bass movement creates a strong leading-tone pull that demands resolution. The predominantly stepwise bass motion creates smooth, connected voice leading. When the progression loops, the bass returns from G to F by whole step.
Scales for Improvisation
F 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, F Mixolydian adds the flat seventh for an authentic blues-rock edge.