Marcos Martínez aka Grison Beatbox: Boss Loop Station World Championship 3
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Marcos MartÃnez aka Grison Beatbox from Spain won First Prize at the 2013 BOSS Loop Station World Championship 3. On January 25, 2013, Boss hosted the final showdown of the Loop Station World Championship 3. Held at the House of Blues in Anaheim, California, the event coincided with the NAMM Show 2013.
