So this "audio supercut" will come as a truly joyous thing as Michael Murphy has edited an entire year of the 'Dead' tuning up. Yes tuning up!
As he describes the project "chronologically sequenced, this remix incorporates every publicly available recording from 1977, examining the divide between audience expectation and performance anxiety".
The source of all the material comes from the extensive Grateful Dead collection at the internet archive and you can download the whole 3 hours via the embedded player below. Click the icon to access the page.
The audio here is is just half of the marathon and it's a strangely hypnotic experience. True Dead fans will not be tested by its length.
So now who can spot the altered tunings.