Patrick is also known as Portrayal Press, one of our venerable MV vendors for technical publication reprints. Quality at a good price for old school guys like me that enjoy getting paper greasy.
Good stuff here: https://www.youtube.com/channel/UCKjQSp ... 7auwVem2ww
He does like his violin music for background (which is good), but if I could pick a tune once in awhile I'd throw in a little Bill Withers "Use Me" or "Ain't No Sunshine" for special occasions.

https://www.youtube.com/watch?v=g3hBYTkI-sE
https://www.youtube.com/watch?v=i5vH1ggTv-A
I also very much enjoy Brian the Metalshaper on YouTube. And Scott on the G503 channel is very good.
Mostly G503 stuff, but a lot translates to G740 and G758.........enjoyable anyway. Lots of knowledge out there!