I'm good enough to follow along a diagram and build stuff I find online, but have no real clue as to the electronics. Given I have a neglected arduino kicking

I'm good enough to follow along a diagram and build stuff I find online, but have no real clue as to the electronics. Given I have a neglected arduino kicking about and a paramedic I could probably get some electrodes from how far removed is this kit from knocking up a very basic 'brain controller'? I've often fancied feeding some 'thoughts' into Ableton for some synth tweaking fun. [edit] thought I should actually do some searching on the subject and I just found the openEEG project which has some info in that direction.