What is "deadringer"

Deadringer is the first studio album by American hip hop producer and DJ RJD2. It was released on July 23, 2002 on Definitive Jux. The album features vocal contributions from Blueprint, Jakki da Motamouth, and Copywrite. Early copies included a hidden song on the last track, titled "Here's What's Left." "Ghostwriter", composed of vocal and fingerpicking loops sampled from Elliott Smith's " I Didn't Understand", was featured in advertisements for Washington State Lottery and Wells Fargo, as well as in the film Wimbledon.