Positive Grid’s Spark amp helps you learn and jam to your favorite songs

Positive Grid’s Spark amp helps you learn and jam to your favorite songs
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When paired with your smartphone or tablet, the 40-watt Spark analyzes your playing style and generates a backing drumbeat and bassline accompaniment. It probably won’t keep up with mixolydian prog riffage, but if you just need some support for your strumming…
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