How to practice 9:20 Special with play-along tracks?

Use the play-along backing track above to practice 9:20 Special in the key of A. Listen to the audio with bass, piano, and drums, start by playing the melody, then practice improvisation and soloing over the chord changes.

What scales to use for soloing over 9:20 Special?

For soloing over 9:20 Special, recommended scales include: bebop, bebop major. Use arpeggio patterns over each chord to create melodic lines that follow the harmony of this jazz tune.

Who composed 9:20 Special?

9:20 Special was composed by Earle Warren / Jack Palmer / William Engvick in 1941. It is a swing standard in 4/4 time. The original key is C; this page shows it transposed to A.

What key is 9:20 Special in?

The original key of 9:20 Special is C. The form is AB with 25 bars. This page shows the chart transposed to A.

What scales work for improvising over 9:20 Special?

Recommended scales for 9:20 Special in A: bebop, bebop major. Scales and arpeggios update in real-time as each chord plays, with context-aware analysis (e.g., Phrygian Dominant over secondary dominants).

How does the interactive backing track work?

The backing track plays with realistic walking bass, drum patterns, and voice-led chord voicings. Scales and arpeggios update in real-time as each chord plays. You can limit the fretboard zone for close-proximity voicings, toggle a reference melody, loop any section, and choose between multiple sound presets. Works for guitar, piano, bass, ukulele, and 7 more instruments.

Can I edit the chord chart?

Yes. You can modify the structure, chords, and arrangement of any standard to match your preferred version or create your own reharmonization.

9:20 Special in A

Earle Warren / Jack Palmer / William Engvick(1941)swing

Do Re MiC D E

Section A

♬

Section B

♬

BPM: 120

Chord Diagrams — 9:20 Special in A (Guitar)

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FingerNoteDegree

Chord Voicings Closest Voicing

9:20 Special 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 B to D (ascending minor third), D to A (descending perfect fourth), A to F# (descending minor third), F# to F (descending half step), F to E (descending half step), E to A (ascending perfect fourth), A to E (descending perfect fourth), E to A (ascending perfect fourth), A to D (ascending perfect fourth), D to D (ascending unison), D to F# (ascending major third), F# to E (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 E to B by perfect fourth.

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 · 25 bars · Form: AB

Chords: B7, Dm7, A6, F♯7, F7, E7, A, Em7, A7, DMaj7, D6, F♯m7, EMaj7.

Scales for Improvisation A bebop, A bebop major.

Diatonic chords: See all chords in the key of A