As played by Grandpa
Background noise is from a rainstorm that was occurring during the performance.
For a version without a rainstorm and less background noise, please consider becoming a member of my channel where you can see alternate takes of videos and other cool stuff.

Wurlitzer model 4023 electronic home organ through a kb electronic music instrumentation analog modular synthesizer. Both are from the early to mid 1970's.

The kb synth is patched between the organ's pre-amp and power amp.