I would not add another concept like "feature" to the design specification (use cases, requirements and claims. Try to include the "feature descriptions" in the requirements description. Not that playing appropriate music in the first 4 use cases is a very relevant requirement...
I would not add another concept like "feature" to the design specification (use cases, requirements and claims. Try to include the "feature descriptions" in the requirements description. Not that playing appropriate music in the first 4 use cases is a very relevant requirement...