The Musical Symbols block spans U+1D100–U+1D1FF, 256 codepoints in Plane 1 (Supplementary Multilingual Plane). 233 are assigned in Unicode 16.0; the other 23 are reserved for future characters.

By script: Common (211), Inherited (22).

By general category: 195 other symbols (So), 22 non-spacing marks (Mn), 8 spacing marks (Mc), 8 format characters (Cf).

The first 219 arrived in Unicode 3.1 (2001); later additions came in 5.1 (1), 8.0 (11), 14.0 (2).

Because it lies outside the BMP, every character here takes four bytes in UTF-8 and a surrogate pair in UTF-16.