Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. document genres
7. [documents by form]
8. [documents for oral or performed works]
9. [documents for musical works]

Anotations

Scope note:

Original and entire drafts or transcripts of musical compositions or arrangements. Typically having the parts of all the different instruments or voices written on staffs one above another, so that they can be read at a glance.