Satin Doll in A#

Duke Ellington / Billy Strayhorn /Johnny Mercer(1953)swing

Satin Doll in A#

Key of A#

A# (Bb) major requires barre chords rooted at fret 1 on the A string or fret 6 on the E string. Despite the barre demands, it is a common key in funk, New Orleans R&B, and brass band music. The open D string can ring as the major third for added color. A# is a intermediate-level key on guitar because the open D string is the major 3rd of Bb, adding a bright color if allowed to ring. 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 F (ascending perfect fourth), F to D (descending minor third), D to G (ascending perfect fourth), G to G (ascending unison), G to C (ascending perfect fourth), C to F# (ascending tritone), F# to B (ascending perfect fourth), B to A# (descending half step), A# to A (descending half step), A to G# (descending half step), G# to A# (ascending whole step), A# to F (descending perfect fourth), F to D# (descending whole step). 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 D# to C 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 · 26 bars · Form: AB

Chords: Cm7, F7, Dm7, G7, Gm7, C7, F♯m7, B7, A♯7, A7, G♯7, A♯, Fm7, D♯.

Scales for Improvisation A# bebop, A# bebop major.

Diatonic chords: See all chords in the key of A#