Modifiers matching voice:

• animal,
• negative,
• professional,
• individual,
• nonverbal,
• important,
• modern,
• political,
• essential,
• narrative,
• basic,
• instrumental,
• unique,
• male,
• logical,
• intimate,

Simple categories matching instrumental:

• ensemble,
• play,
• grouping,
• group,
• test,
• voice,
• works,
• genre,
• composition,
• track,
• style,
• characteristic,
• investigation,
• passage,
• music,
• quality,
• action,
• analysis,
• form,
• entity,
• section,
• piece,
• assembly,
• force,
• sound,
• artifact,
• hardware,
• masterpiece,
• part,
• accompaniment,
• timbre,
• effect,
• activity,
• trait,
• combination,
• selection,
• product,
• song,