Tom Smothers negotiated creative control over their next CBS show, a variety show entitled The Smothers Brothers Comedy Hour in 1967. The documentary Smothered describes how the brothers (particularly Tom) fought CBS censors to sneak in references to religion, recreational drugs, sex, and the Vietnam War. Smothers is widely quoted as saying: "The only valid censorship of ideas is the right of people not to Listen." The brothers' oppositional politics led to their show's demise, with David Steinberg later claiming "The most innovative variety show on television shut down because of political pressure". During the same years, Tom wrote and recorded mainstream songs, such as "Can't Help Falling in Love with You." Tom has since stated, "When the Smothers Brothers came on the air we had no political point of view or social consciousness, it just evolved as the show was on the air."