Rock Band 4's long road to making your old instruments work on Xbox One

Harmonix achieved two unprecedented goals with Rock Band 4, and both required a lot of elbow grease. The studio conceived Rock Band 4 as a platform, designed to support as much of the music that players had previously purchased, and as many of the plastic instruments gathering dust in their closets, as possible. "People have spent good money on their controllers and it seemed crazy to force folks who already have good working controllers to buy new ones," said Daniel Sussman, project manager on