Sure... I dont have any apple products. and a laptop is too bulky.. so a "look alike" IPAD tablet would be the best.
Not to start a flame war, or get into the whole Apple versus PC mess, but you could look at the new Macbook Airs.
They are anything but bulky, and have a full sized laptop keyboard,full OSX, and SSD hard drive which makes the computer fly. I just got back from the Apple Store and got one for my wife, its pretty sweet.
I think Dell has an alternative too, the "Adamo," I think its called; if you are a PC fan.
Either way these new ultra portable laptops would probably make an excellent music controller since you can also do multi task work and the like while listening to music.