DoubleBlade said:
might as well be a one man show band lah.... :lol:
One man band will never take off. First, keyboard can imitate many instruments but can never replace them (as much as I would like it to). There are too many nuances in an instrument that makes exact imitation impossible, although it can get pretty close. Take guitar for example - we can imitate the the strumming, the plucking, even the ghost notes, fret noises and slides. But there's something about playing the real instrument that we can never imitate exactly - the feeling, emotion and the interpretation of the player actually playing the six strings with his fingers.
Secondly, there's image. People would rather see a band with all instruments than one man playing his keyboards.
Thirdly, it cannot be done live. We need to sequence it. Even as you suggested - splitting the keyboard at middle C with drums below that and guitar above that. That's quite impossible. We need 2 hands to play drums on the keyboard and 2 hands to play the guitar sounds. Unless, you meant those keyboards with rhythm and pattern functions (like the Yamaha PSR) - which has a lot of limitations on flexibility.
Same reason why with all the ultra realistic samples out in the market now, Hollywood still uses real orchestras for most of their movies. Even the famous Vienna family of samples (eg Vienna Overdrive that you mentioned) cannot imitate 100% albeit close.
From what I can see, ultra realistic samples will never replace a live band completely. It will also not replace Hollywood music (at least not in the short term). It's place is in music that is sequenced - recorded singles, computer games music, maybe some live vocals (although people still prefer to see a real band rather than one man), some musicals (when attention is on the actors/ dancers and not the band), advertisements etc. The incentive to have one man doing all the music is cutting cost - cheaper to have one guy doing all the music than a few people, an orchestra or a choir.