According to Roland, all you need is a SonicCell and a keyboard (or a guitar, or a saxophone...)
You place all of your backing tracks inside the little box and you are done: no need for a laptop either... and the price should be under 1000 dollars.

[This message has been edited by Dreamer (edited 08-12-2007).]
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Korg Kronos 61 and PA3X-Pro76, Roland G-70, BK7-m and Integra 7, Casio PX-5S, Fender Stratocaster with Fralin pickups, Fender Stratocaster with Kinman pickups, vintage Gibson SG standard.