The Logic Off Topic list

I have the Underworld Live DVD.  The songs are songs - lengthened perhaps but 
not the improvisorial freedom you discuss. In fact, it seemed that most of 
their musicianship was manning mixing desks - rather than keyboards. They 
fiddle with the faders a bit. 

Many non-techno artists use some degree of sequnencing with some live 
elements - Madonna, Janet Jackson, Depeche Mode. ... even BT. I saw him live 
about 2 years ago - a great concert that appeared to be mostly live actually 
but I read it was all sequenced.

So can some of you outline for us how techno music is made.. things different 
that non-techno?