Second, are there any Haskell libraries that can help with this task?
In my own experience, Data Mining is a very interactive task. You want to keep your feedback loop as tight as possible. Therefore the user interface becomes an important part of your setup. Text-based interfaces just don't cut it. And now consider the state of GUIs in the Haskell world… Personally I like [Knime] for Data Mining. Funnily enough it's written in Java (based on Eclipse), but you can see how most of it would translate beautifully to a functional language. Lots of maps and folds in disguise. Yet more interesting is that the style of visual data-flow programming that's used in it also lends itself well to music generation. In other words what you need might not exist yet, but you may be a perfect candidate to improve the state of GUIs in Haskell. ;) Cheers, MarLinn [Knime](http://www.knime.org/knime-analytics-platform)