What 𝈌 means
It told singers to sing pitch B alongside the words.
Ancient Greek vocal notation placed pitch signs with song text, so the marks guided melody rather than forming part of the lyrics. The earliest surviving written examples date to the middle of the third century BC; the notation was already established by then. Some surviving examples are Christian hymns.
𝈌 is the base sign in the vocal B group; and mark successive raisings of that pitch. Their interval sizes depended on the scale pattern, so they do not map neatly onto one modern half-step.
Why does 𝈌 resemble Μ?
Its shape adapts rotated Greek capital mu; its role is musical.
Scholarly descriptions identify its design as a Greek capital mu (Μ) rotated 180 degrees. That explains its shape, not its musical role: 𝈌 marks vocal pitch B. The number 13 is a catalog label, not part of the sign's reading.
Ancient Greek notation has a separate instrumental series: marks its instrumental B counterpart, while 𝈌 is the vocal B sign.
Part of the collection
Don't confuse it with
1
Questions people ask
1Why does 𝈌 show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type or find 𝈌
- Also called
- vocal B
- Search it as
- Greek vocal notation · ancient Greek music notation · rotated mu · U+1D20C
- Shows up in
- Anything that takes text · its shape is whatever your font draws
𝈌\1D20CCodes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.