Sound engineer and producer -- via audioz.info. He was the one to capture the sound of perfectionists Steeley Dan; he also worked extensively with John Denver. Who else did he record? the Beach Boys, Stevie Wonder, Crosby Stills & Nash, Roy Orbison, Placido Domingo, Rickie Lee Jones, Mark Knopfler and many others. He went to high school with Frank Zappa -- they goofed around and recorded Frank's early music together.