St. Clairsville - C. A. House Music in St. Clairsville, OH has been named one of the Top 100 musical instrument and product retailers in the world by the National Association of Music Merchants (NAMM). The designation will be formally presented to the Top 100 dealers at Summer NAMM, a trade show held in Nashville, TN this July. C. A. House Music is also being considered to receive the Dealer of the Year award, NAMM's highest honor for retailers.