There is a contact microphone on top of the electric piano. The unplugged electric lap steel guitar is setting on top of the contact microphone.
The contact microphone is in channel one of the Koma Elektronik field kit.

There is a DC motor connected to the Koma field kit's DC output. The DC motor is placed underneath the the spring of the reverb spring pan. The output transducer of the spring reverb pan is plugged into channel two of the field kit.
The DC motor is being modulated by the field kit's onboard LFO which is also modulating the Koma's cv radio in channel four of the mixer.

The output of the cassette tape recorder with loop is connected to channel three of the field kit.

The Koma field kit and Wurlitzer mo.145 electric piano are connected to a Leslie mo. 705 Roto-Sonic rotating speaker cabinet through a Peavey Unity 1000 eight-channel mixer.