“There's an old L.A. music biz tale that details a stunned Brian Wilson accidentally overhearing a recording session down the hall from his own. As the story goes, Wilson was hanging at Studio Three West with *Pet Sounds* collaborator Gary Usher in the spring of 1966 when he caught snippets of a recording conducted by 21-year-old wunderkind Curt Boettcher. Boettcher, fresh from producing The Associ”