A professional who classifies and files musical recordings, sheet music, original arrangements, and scores for individual instruments. Selects music for subject matter of program or for specific visual or spoken action. Suggests musical selections to director, music or director, program or disk jockey . May issue required music to conductor, orchestra , or other studio personnel. May track musical selections broadcasted, using computer. May listen to music, using playback equipment, to verify quality of recordings meet broadcast standards.