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. information artifacts
7. [information artifacts by physical form]
8. recordings
9. sound recordings
10. audiotapes

Anotations

Scope note:

Cartridge-based 1/4-inch analog audiotape format. The 8-track cartridge is a magnetic tape-based recorded sound format that was used exclusively for commercial releases. The tape is composed of magnetic particles or pigment, binder, and a polyester base. It was a popular format from the mid-1960s through the early 1980s.