Sequencer unit of electronic musical instrument

A sequencer unit for an electronic musical instrument comprising:

• (a) memory means containing a plurality of memories each storing performance data;
• (b) select means for selecting one of said plurality of memories;
• (c) means for generating a tempo clock;
• (d) reading means for sequentially reading out said performance data from said memory means based on said tempo clock;
• and
• (e) reading control means for changing over from readout of a first memory currently being read out to readout of a second memory to be next read out, wherein said first memory is changed over to said second memory at a timing dependent upon when said select means selects said second memory.

A sequencer unit for an electronic musical instrument comprising:

• (a) memory means for storing performance data;
• (b) writing means for writing said performance data into said memory means;
• (c) means for generating a tempo clock;
• and
• (d) reading means for sequentially reading out said performance data from said memory means based on said tempo clock, said reading means reading out said performance data in accordance with a predetermined order corresponding to an end timing for writing said performance data into said memory means when the last of said performance data written in said memory means is located in the middle of a bar, wherein a non-tone period corresponding to the time between said end timing for writing said performance data into said memory means and the end of said bar is eliminated in a reproduction state so that performance date is continuously and repeatedly read out from said memory means.

An electronic musical instrument comprising:

• (a) memory means for storing performance data;
• (b) means for generating a tempo clock;
• (c) reading means for sequentially reading out said performance data from said memory means based on said tempo clock;
• (d) musical tone generating means for generating a musical tone in response to performance data read out by said reading means;
• (e) first switch means for changing a performance state form an automatic performance state to a non-automatic performance state;
• (f) second switch means for re-starting said automatic performance in said non-automatic performance state;
• and
• (g) control means for inhibiting a generation of musical tone, without stopping a generation of said tempo clock and a counting operation of said tempo clock when said control means detects that said first switch means is operated, and wherein said control means allows said generation of musical tone when said control means detects that said second switch means is operated.

A sequencer unit for an electronic musical instrument comprising:

• (a) first memory means for storing chord data;
• (b) second memory means for storing a plurality of accompaniment patterns including an ending pattern;
• (c) means for selecting one of said accompaniment patterns;
• (d) means for generating a tempo clock;
• (e) reading means for sequentially reading out stored data from said first and second memory means based on said tempo clock;
• and
• (f) accompaniment data generating means for generating and outputting accompaniment data based on said chord data and said accompaniment pattern, said accompaniment data generating means generating and outputting said accompaniment data based on a limited range of chord data when said ending pattern is selected.

An electronic musical instrument comprising:

• (a) input means for inputting a music performance;
• (b) control means for controlling an automatic performance based on a performance on said input means;
• (c) a tempo generator for generating a clock pulse corresponding to a predetermined tempo;
• (d) a sequencer memory including a plurality of sequencer areas each storing specific performance data which are generated in accordance with a performance of said input means in advance, said performance data being written in and read from each sequencer area in synchronism with said clock pulse;
• (e) register means including a plurality of registers each writing and reading out specific data under control of said control means;
• and
• (f) switching means including a plurality of switches each controlling an automatic performance which is played based on said performance data stored in said sequencer memory.