For teachers & schools

Home
Note Library
B double flat

B double flat

Abbreviation

B𝄫

Frequencies

27.55511022044088017603520

Similar intervals

Images

Guitar note diagram for B double flat in position 0

Learn music theory with Sonid

Learn music theory with practical tools, guided app exercises, and a complete reference for chords, scales, notes, intervals, and modes.

Product

Use cases

For beginners
For guitarists
For pianists
Ear training

Solutions

For teachers & schools

Learn

Theory

Intervals
Interval playlists
Chords
Scales
Terms
Notes reference

Tools

Music Theory Playground
Metronome
Tuner

Community

Blog
Basics
Ear training
About us

Get the app

App Store

Google Play

About & legal

Created byMartijn van der Eijk

Written byLida van der Eijk

Vectors byFreepik

Socials

Music Theory Video SeriesA step-by-step guide to music theory fundamentals. These 60-second videos provide a clear, structured path to understanding how music works, optimized for a full-screen learning experience.

Music Theory ShortsMaster music theory concepts in 60 seconds or less. Quick, vertical videos designed to give you essential theory knowledge in a fast-paced, mobile-friendly format.

@copyright Martijn van der Eijk 2026•EULA