KARAOKE APPARATUS CONNECTABLE TO EXTERNAL MIDI APPARATUS WITH DATA MERGE

A karaoke apparatus responds to a request command for sounding a karaoke performance and is connectable to an external electronic musical apparatus for mixing an additional performance. A data supply is responsive to a request command for supplying an internal data representative of the karaoke performance. A data interface is connectable to an external electronic musical apparatus for admitting therefrom an external data representative of the additional performance. A merging controller merges the internal and external data with each other to avoid clashing therebetween. A sound source has a common tone generator for processing the merged internal and external data to concurrently sound the karaoke performance and the additional performance mixed with each other.