B♭ Chromatic Scale

Notes in the B♭ Chromatic Scale

Interval Pattern

Harmony

The chromatic scale contains all 12 pitch classes and has no diatonic harmony — all chromatic passages use all pitches equally. See individual chord types for specific harmonic structures.

Key Signature

2 ♭ — The B♭ key signature uses B♭, E♭.

B♭ Chromatic Scale in Practice

The B♭ Chromatic Scale uses the key signature of 2 flats (B♭, E♭). Bb major has two flats (Bb, Eb) and is extremely common in jazz and wind ensemble music. It is the home key for Bb instruments such as the trumpet and tenor saxophone. On guitar, B♭ positions offer comfortable transposing instrument keys for this scale.

The chromatic scale includes all 12 pitches within an octave, each a half step apart. It has no tonal center and is used as a reference for all other scales and as a compositional device. When played starting on B♭, the 12 notes are B♭, B, C, D♭, D, E♭, E, F, G♭, G, A♭, A. In this key the signature has 2 flats (B♭, E♭). Bb is the concert-pitch key when Bb instruments (trumpet, clarinet, tenor sax) play in their native C, making it the most common jazz and band key. Jazz standards in Bb are ubiquitous — tunes like "Autumn Leaves" and "All Blues" sit naturally for horn sections, and the key is a default for jam sessions.

Tuning Frequencies Across Temperaments

Frequencies shown at A=440 Hz. View full temperament data for any note.

Related Scales

Transposing Instruments: B♭ Chromatic Scale

B♭ is a natural key for B♭ instruments (trumpet, clarinet, tenor sax), which sound a major second lower than written. B♭ instruments reading in C produce B♭ concert pitch. E♭ instruments (alto sax, baritone sax) reading in B♭ sound a major sixth lower.