How to practice 42nd Street with play-along tracks?

Use the play-along backing track above to practice 42nd Street 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 42nd Street?

For soloing over 42nd Street, recommended scales include: bebop minor, bebop. Use arpeggio patterns over each chord to create melodic lines that follow the harmony of this jazz tune.

Who composed 42nd Street?

42nd Street was composed by Harry Warren / Al Dublin in 1933. It is a swing standard in 4/4 time. The original key is Eb; this page shows it transposed to A#.

What key is 42nd Street in?

The original key of 42nd Street is Eb. The form is AB with 24 bars. This page shows the chart transposed to A#.

What scales work for improvising over 42nd Street?

Recommended scales for 42nd Street in A#: bebop minor, bebop. 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.

42nd Street in A#

Harry Warren / Al Dublin(1933)swing

Do Re MiC D E

Section A

♬

C♭9

♬

C♭9♬

♬

Section B

C♭9♬

A♯m/F♬

C♭7♬

A♯m/F♬

♬

C♭7

♬

C♭9

♬

C♭9♬

♬

BPM: 120

Chord Diagrams — 42nd Street in A# (Guitar)

Display

FingerNoteDegree

Chord Voicings Closest Voicing

A♯m/F

42nd Street 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 A# to F (descending perfect fourth), F to Cb (descending perfect fourth), Cb to A# (descending whole step), A# to A# (ascending unison), A# to Cb (ascending whole step), Cb to D# (ascending minor third), D# to A# (descending 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 A# to A# by unison.

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 · 24 bars · Form: AB

Chords: A♯m6, F7, C♭9, A♯m, A♯m/F, C♭7, D♯7, A♯m7.

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

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