American guitarist, singer, songwriter, and producer who was simply a longtime person in the pop rock group The Doobie Brothers. He was a program musician for quite some time before becoming a member of The Doobie Brothers. He performed the steel acoustic guitar on the traditional C&H Sugar industrial. He and his wife Marcy reside in Santa Barbara, California. He’s a regular collaborator with Elvis Costello, playing on albums like My Goal is True.