This property defines the Unicodes which belongs to Ancient Greek Music block
Characters like 𝈀,𝈁,𝈂, etc. are listed under Ancient Greek Music Block.
71 Characters are present in Ancient Greek Music Block starting with the Unicode point U+1D200 that represents the character 𝈀.
Currently, as per latest version 15.0.0, Unicode supports 328 number of Block. Here are a few examples - Latin Extended E,Adlam,Aegean Numbers, etc.