Watch Willie Nelson and Merle Haggard perform their Townes Van Zandt-penned No. 1 hit "Pancho and Lefty" live in 2007.

Here is the reason why George "The King of Country" Strait and Willie "The Red Headed Stranger" Nelson are not members of the Grand Ole Opry.

Richard Perry, whose many successes included Carly Simon's "You're So Vain" and a Ringo Starr album featuring all four ...