Each of communication controllers sends a count value of a timer corresponding
to the lapse of time from a starting point of reproduction during the reproduction
of a music to a communication cable. Each of game controllers calculates, while
a multi-play mode is executed in an other game apparatus, a reproducing position
of the music in the other game apparatus based on the count value sent from the
communication controller and transfers a music data from the calculated reproducing
position on to a sound source memory upon the receipt of an instruction signal
outputted from a confirmation button of an instructing section and representing
confirmation of selection of the multi-play mode. While one game player is playing
a music game, another game player can participate in this game in the middle of
a music number.
