Mellotronists

At 00:53 you can see the flywheel..(on the left side of this thing -
so I guess it is not a M400).

Check out the pitch dives he does after about 2:30........

http://www.youtube.com/watch?v=4Qlm4v6i80c

Very nice.  Thanks for sending.  That would be steel guitar tapes?
Who is the Chamberlin-ist ?

M1 sounds would have been recorded late 60's wouldn't they?