It’s a novel idea and not nearly the coolest thing about [BLOK],.. but a pretty unique and cool looking one. Made a little video of it:
sketching in buzz from stumm on Vimeo. Recording of my workflow.. sketching out some quick ideas in the latest beta of the modular sequencer, Buzz (Build 1183 01/06/2010). The interface shown is a wpf/xaml theme I am currently working on and is not available to the public yet (though will be soon).