9 audio interfaces; audio mixers; electric and electronic effects units for musical instruments; amplifiers for musical instruments; downloadable computer software for generating, recording, reproducing, editing, analyzing, effecting, and mixing music, songs, sounds and audio recordings; downloadable computer software used for playing and practicing music instruments; downloadable computer software for playing music; downloadable computer communications software for transmitting digital content; downloadable computer software for controlling audio apparatus; electronic publication featuring musical scores and sheet music; downloadable electronic music files provided from a computer network.