| S.C. strikes a chord with niche music industry Three manufacturers and crafters from across South Carolina share how they developed one-of-a-kind businesses in the instrument and sound system field that attract award-winning customers from around the world. They include Sealevel Systems CEO Tom O'Hanlan, John “Chuck” Herin, who owns Pegheds tuning pegs in Winnsboro, and Tom Strange, founder of Square Piano Tech in Greenville | 