Júrame in A

Júrame in A

María Grever, primera compositora latinoamericana en triunfar en Hollywood, escribió 'Júrame' en 1927. Plácido Domingo, Eydie Gormé y Pedro Infante la grabaron para generaciones distintas. El movimiento F-Fm en el puente — el mismo recurso modal de Somos Novios — es una de las firmas de la canción romántica mexicana: ese instante de oscuridad que hace brillar más el amor.

Júrame in A

A major is a rock and blues cornerstone. The open A string delivers a strong root, while both E strings ring as the fifth. Classic A-D-E progressions practically play themselves with open cowboy chords. The open high E is the fifth, reinforcing power. A is a beginner-level key on guitar because the open A string is the root and the open E strings provide the fifth above and below, creating a massive low-end anchor. Beginners will find this key approachable since most chords use open voicings with minimal stretching.

Voice Leading

The bass line moves through A to F# (descending minor third), F# to B (ascending perfect fourth), B to E (ascending perfect fourth), E to C# (descending minor third), C# to F# (ascending perfect fourth), F# to D (descending major third), D to D (ascending unison), D to A (descending perfect fourth). 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 A to A by unison.

Scales for Improvisation

A 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, A Mixolydian adds the flat seventh for an authentic blues-rock edge.