U+1D137 "𝄷" Musical Symbol Ottava Bassa Unicode Character

U+1D137 "𝄷" Musical Symbol Ottava Bassa is a notation mark used in musical scores to indicate that a passage of notes should be performed one octave lower than written. It is visually similar to the numeral "8" placed below the staff, often accompanied by a dashed or solid horizontal line extending over the affected notes. This symbol is part of the Musical Symbols block in Unicode, designed to support precise and standardized digital representation of Western music notation, and it helps musicians avoid excessive ledger lines by simplifying the reading of low-pitched passages.

General Properties

Code Point	U+1D137
Version Added	3.1
Name	Musical Symbol Ottava Bassa
Block	Musical Symbols
General Category	Other Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	𝄷
HTML Hex Encoding	𝄷
UTF-8 Encoding	0xF0 0x9D 0x84 0xB7
UTF-16 Encoding	0xD834 0xDD37
UTF-32 Encoding	0x0001D137
C/C++/Java Escape	\ud834\udd37

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Script	Common
Script Extensions	Common
Indic Syllabic Category	Other
Vertical Orientation	Upright
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other