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This might help: go to the far upper left of the main screen and then click "choose from 24 built-in" styles."

Here you will see BiaB's most basic list of styles. Explore the list and see what happens when you try different styles.

The '24 styles' go back to when BiaB was first invented, and that was a long time ago. Since then thousands of styles and hundreds of Realtracks have been added. I think if you start by exploring these most basic styles you will be able to get a grip on where the other styles and real tracks come into the picture.

Flatfoot sez: Call me when 'Talent-in-a-Box' is ready to ship! -- [8{>

Got some tunes on You Tube:
http://www.youtube.com/user/flatfoot50
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My BiaB lesson site:
http://jdwolfe0.wixsite.com/learnbiab