Rico Vacilon in E

Rico Vacilon in E

Rosendo Ruiz's 1952 cha-cha-chá became one of the genre's most beloved anthems as recorded by Conjunto Modelo. The infectious montuno vamp on A6 and E7 anchors the A section, while the B section dances through a chromatic passing chord (Bb°7) to the coro, then turns to the relative minor via C#7, F#m, and B7.

Rico Vacilon in E

E major is arguably guitar's most powerful key. The open low E and high E strings ring sympathetically as the root, while the open B provides the fifth. This triple reinforcement gives E-based riffs and chords unmatched depth and volume. E is a beginner-level key on guitar because both the low E and high E strings ring as the root, and the open B is the fifth — three open strings reinforce the tonic chord. Beginners will find this key approachable since most chords use open voicings with minimal stretching.

Voice Leading

The bass line moves through E to B (descending perfect fourth), B to E (ascending perfect fourth), E to F (ascending half step), F to G# (ascending minor third), G# to C# (ascending perfect fourth), C# to F# (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 F# to E by whole step.

Scales for Improvisation

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