Do you enjoy the music of the Wainwrights and the McGarrigles? Loudon III? Kate? Rufus? Martha? Anna? Then you should probably save some thanks for Chaim Tannenbaum, who, as Harold Heft explains today in Tablet Magazine, has written for, played a whole variety of string instruments as well as the saxophone on, and even produced some of the clan’s most treasured songs and albums.