In this post, DIYRockAndRoll.com reviews the Yamaha FGDP-50 finger drum machine. Could this rechargeable, battery-powered, textbook-sized gadget be the perfect tool for DIY rock recording? We break it down in detail with video demos and audio samples, gathered from eight months of using the product. Spoiler alert: the Yamaha FGDP-50 has cowbell!