This property defines the Unicodes which belongs to Znamenny Music block
Characters like 𜼀,𜼁,𜼂, etc. are listed under Znamenny Music Block.
188 Characters are present in Znamenny Music Block starting with the Unicode point U+1CF00 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.