Ubisoft Partnered with Worlds Premier String & Accessory Manufacturer Ernie Ball to Host Hands-On Demos at All Nationwide Vans Warped Tour Stops WHAT: Ubisoft partnered with Ernie Ball, Inc., the worlds premier string and accessory manufacturer to host hands-on demos of the upcoming video game developers breakthrough music video game Rocksmith at all 44 nationwide stops of the Vans W... more.