Sequence Playing Another MIDI Pattern From Another Sequence

I have all of my tracks muted in Sequence 4. When I press play, it triggers a midi sequence from another Sequence. I figured it shouldn't play any of the sounds, but I have no idea what is making it act with such odd behavior. Anyone know the solution?

I would think it is the simult play. That sounds like the problem.
http://www7a.biglobe.ne.jp/~mpc1000/os2 ... uence3.htm
Read the manual for your OS yeah ! tell us your OS and MPC to, cos we are not that psychic. just helps us help you. Also it does not matter what sequence number it is either. Also check mute screen and use mute all, just in case there is another track you do not know about say track 24 for instance and have to go to bank B to see this in mute screen so mute al helps to double check.