9 Prepackaged computer software, downloadable computer recorded software, downloadable music files and data for music composition, music arrangement, music notation, music publishing, music distribution, conducting music education, music practice, music performance, music accompaniment, music recording, music performance assessment, and music theory assessment all in the field of music; downloadable electronic data files and downloadable computer recorded software featuring music accompaniments for music composition, music arrangement, music notation, music publishing, music distribution, conducting music education, music practice, music performance, music accompaniment, music recording, music performance assessment, and music theory assessment; pre-recorded music recorded on optical and magnetic media; pre-recorded video and audio featuring music accompaniments recorded on optical and magnetic media