FMike is an innovative Bluetooth Smart Microphone with Bluetooth bi-directional transmission, real-time mixing and real-time monitoring with FM output. The music comes from mobile phone with any music apps via Bluetooth to the FMike. FMike broadcasts the music with FM frequency. User listen to the music from ex. car audio system via FM and sing at the same time. The user will hear his vocal mixed with the music together come from the car audio system. The mixed audio transfer back to mobile phone for recording or sharing in real-time too. In addition, there is an audio DSP embedded, it provides various digital sound effects inside the microphone.