Mastering engineer Raised in Detroit and Los Angeles Has worked at -Bernie Grundman Mastering - The Mastering Lab, Hollywood -A&M Mastering Studios Winner of the 2005 Grammy Award for mastering. He is the U2's mastering engineer for the past 19 years, He has worked also for Ray Charles, Stevie Wonder, The Who, Frank Zappa, Peter Frampton, Bonnie Raitt, Willie Nelson, Shania Twain and Carpenters. He has worked also at A&M Records and Warner Bros. Records.