Abstract: The invention provides a performance recording/reproducing apparatus including a playing information recording device, a data discrimination device and a data transfer device. The data discrimination device discriminates a specific channel of playing data, which needs correction or modification from the others all merged on one of the tracks of the playing information recording device. The data transfer device transfers data of the specific channel to another track. The apparatus thus efficiently corrects or modifies only data of the specific channel and accordingly completes recording of performance in a short while.

Abstract: The invention provides a metronome for electronic instruments, which has memory means, event data output means and control means. The control means instructs the event data output means to output code data for generating beat sound for a certain time period. The code data is outputted at pitches and volumes based on beat data and at time intervals according to tempo data both stored in the memory means. The metronomre of the invention outputs beat sound together with main sound for a tune, without any specific devices attached to electronic instruments.