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Title: Auto-tune would have been a blessing.
Review: The instrumental tracks are faithful to the original, but the demo vocals are often under-pitch and poorly mixed - I would never use them to help students learn the songs. I understood that there would be background vocals included on the "instrumental only" cd, but even the brothers' parts are included as "background." So, if you're a soloist who doesn't mind singing with mediocre background singers or just want to wail in your bedroom, this could be useful to you, but otherwise - buy a different product.
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