ESK - Tom Oberheim SEM + Sequencer

Playing the Tom Oberheim SEM Synthesizer with a Sequencer (Doepfer A-155, A-154).
There are some effects from the Elektron Digitone (Chorus, Delay, Reverb).
I made 4 sequences with the SEM in this video.
www.metunar.ch

[@kamelhamlaoui9983]

Hi! How the SEM is connected, plugged??

[@kamelhamlaoui9983]

So the SEM out is connected to what, where? Please need to understand. Anyone can help me?