Ask the students if this is music. Then tell them that if this were played they might hear music. Then ask what must happen for sheet music, cassettes, or CD's to produce music. In discussion you should come to agree that in order for 'sheet music', or cassettes, or CD's to give music, the music that is in them or on them must be played or performed. When you have finished this section write the sentence below on the overhead and have the students copy it into their notes.
Music is played or performed.
That information might be music. Ask the students what other kinds of information might be stored on cassettes or CD's. Engage the students until consensus is reached on this point. When you have finished this section write the sentence below on the overhead and have the students copy it into their notes. Written or recorded music is stored information.