To use a microphone belonging only to a user and to carry a dedicated music selection remote controller for the user by providing a cordless microphone function and a music selection remote controller capable of a bar code input and a manual input.

A signal transmitter having a music selection remote controller function provided with a bar code reader 1 capable of a bar code input capable of storing a selected music number and a manual input from a key panel 11 is included in a portable telephone. A wireless microphone 7 is also included in the portable telephone. Then, the portable telephone has a KARAOKE (orchestration without lyrics) reproduction function. When a user uses not only a telephone and a data communication function but also the KARAOKE while using a mobile telephone terminal in this way, the user can use the microphone 7 belonging only to the user and carry a dedicated selection remote controller for the user capable of storing a favorite music number.