Obsesión in C#

Obsesión in C#

Pedro Flores, el puertorriqueño que redefinió el bolero, compuso 'Obsesión' en 1934. Es uno de los grandes boleros del repertorio hispanoamericano: 'por alto esté el cielo en el mundo, por hondo que sea el mar profundo'. Trío Los Panchos, Luis Miguel y cientos de intérpretes la han grabado. El Bbmaj7-Bbm del puente — el recurso de la sombra modal — da a este bolero en Fa mayor su dimensión de obsesión verdadera.

Obsesión in C#

C# major (or Db) sits in barre chord territory across the fretboard. Every chord demands precise barring, but the payoff is a bright, crystalline sound a half step above C that cuts through a band mix. C# is a intermediate-advanced-level key on guitar because no open strings fall within the key naturally, so every chord requires full barre technique. Expect to rely on barre chords throughout, which builds hand strength and unlocks the entire fretboard.

Voice Leading

The bass line moves through C# to D# (ascending whole step), D# to G# (ascending perfect fourth), G# to F (descending minor third), F to A# (ascending perfect fourth), A# to F# (descending major third), F# to F# (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 F# to C# by perfect fourth.

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.