Patent attributes
A CPU of an overdubbing device plays back a music file recorded in a memory card of the device and outputs the file as a played-back audio signal while mixing the played-back audio signal with an external audio signal input from the outside, to thus perform overdubbing. A music file recorded through overdubbing last time is automatically set as a playback music file for the next time, and a selected state of means for selecting execution/nonexecution of overdubbing is maintained as the state of execution. As a result, overdubbing is enabled by twice operations of a record key, whereby the operation is made identical with operation performed during ordinary recording. Further, playback is performed by changing either playback speed or musical interval of the playback music file.