Wolfgang Palm the father of PPG and Wavetable synthesis added some 80s videos to his YouTube channel. I really love the one above which shows him at work. You can see the care that went into making the PPGs and it’s in no doubt many are still working today. The accompanying music is also great!
“PPG Company 1984, Production, 10 year anniversary celebration music by Michael Wehr 2009 and from PPG-demo 1983″ – Wolfgang Palm
For more info: wolfgangpalm.com