Reason (be sure to watch the trailer to get a feel for the product) is a phenomenal music composition application that I've been using for quite a few years. The other day I received an email from the developers, PropellerHeads in Sweden, saying that a new upgrade was available.
At that point it hit me, Reason should be an astounding Tablet application, and here's why.
Reason mimics in a very graphical sense and rack of equipment. You add items to the rack like sequencers, mixers, synths, samplers, effects units, etc... and hook them together just like you would in the studio - by switching to the back of the panel and connecting them all together using cables. And the cables sway to and fro as you move them.
It's all very tactile. All the knobs and switches move; the buttons all work, and it sounds astounding - you typically do everything with the mouse. With the Tablet of course, you do everything with the stylus and it really starts to feel like you're using your hand.
And if that's not enough, here's the kicker. Racks are tall, switch to tablet mode and way more of the screen is covered by the rack.
It's a wonderful thing...
So there you go Robert, another area in which the Tablet could start to make dramatic in-roads.

