How to practice Once in a While with play-along tracks?

Use the play-along backing track above to practice Once in a While 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 Once in a While?

For soloing over Once in a While, 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 Once in a While?

Once in a While was composed by Michael Edwards / Bud Green in 1937. It is a swing standard in 4/4 time. The original key is Eb; this page shows it transposed to A.

What key is Once in a While in?

The original key of Once in a While is Eb. The form is AB with 26 bars. This page shows the chart transposed to A.

What scales work for improvising over Once in a While?

Recommended scales for Once in a While 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.

Once in a While in A

Michael Edwards / Bud Green(1937)swing

Do Re MiC D E

BPM: 120

Chord Diagrams — Once in a While in A (Guitar)

Display

FingerNoteDegree

Chord Voicings Closest Voicing

C♯13

Once in a While 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 A (ascending unison), A to C# (ascending major third), C# to F# (ascending perfect fourth), F# to B (ascending perfect fourth), B to F# (descending perfect fourth), F# to E (descending whole step), E to D (descending whole step), D to G# (ascending tritone), G# to C# (ascending perfect fourth), C# to A# (descending minor third), A# to D# (ascending perfect fourth), D# to G# (ascending perfect fourth), G# to C# (ascending perfect fourth), C# to F# (ascending 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 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 · 26 bars · Form: AB

Chords: A, A6, AMaj7, C♯m7, F♯9, Bm7, F♯7, E7, Dm7, G♯7, C♯Maj7, A♯m7, D♯m7, G♯7♭9, C♯13, F♯7♭9.

Scales for Improvisation A bebop, A bebop major.

Diatonic chords: See all chords in the key of A