The voice hearing through telephone and sweet music hearing through stereo has so many things in common. For the best, both the voice and the music change emotion of listener by slight change of tones. There fore, I metaphored music player to voice player (telephone).

Image of telephone icon
This is not a telephone. This is metaphored CD player.
To tell CD player is meant to metaphor with telephone, I used icon image of telephone instead of telephone itself.

Silhouette of CD
This item, telephone, uses only sense of hearing so that visual image could be imagined through voice but it’s not clear. As music also uses sense of hearing only, this CD player shows unclear image (silhouette) of CD to tell its playing.