Jammit vs. R-Mix

What do you think about Jammit?

If you don't know what it is, check out "How It Works" demo.
I find it interesting.

However, I think the software called R-Mix (and its simplified iPad version called R-Mix Tab),
which is soon to be released from Roland, can be their strong competitor.

See this video: R-MIX Audio Processing Software Overview

Roland's official information on the product is here.

If you want a tool to help you to learn to play instrument,
perhaps R-Mix offers more than what you need.
I think you can have more fun with R-Mix as it offers more flexibility than Jammit's service.

On the other hand, if your interest is to listen to the elements of music you love, analyze its structure etc, Jammit may be your treasure trove.

For example, their demos include the Beatles' Revolution.
Brief breakdown of this song alone makes me interested in Jiammit's service.