The Preacher in A

Horace Silver(1955)swing

The Preacher in A

Key of 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 A (ascending unison), A to D (ascending perfect fourth), D to D# (ascending half step), D# to E (ascending half step), E to B (descending perfect fourth), B to A (descending whole step), A to C# (ascending major third), C# to B (descending whole step), B to C (ascending half step), C to C# (ascending half step), C# to F# (ascending perfect fourth). 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 F# to A by minor third.

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.

swing4/4 · 18 bars · Form: AB

Chords: A, Adim, D, D♯dim, E7, B7, A7, C♯7, Bm7, Cdim, C♯m7, F♯m7.

Scales for Improvisation A bebop, A bebop major.

Diatonic chords: See all chords in the key of A