proceeded to write lyrics for the verses that were ultimately discarded. Theremin and cello From the start, Wilson envisioned a theremin for the track. AllMusic reviewer John Bush pointed out: "Radio listeners could easily pick up the link between the title and the obviously electronic riffs sounding in the background of the chorus, but Wilson's use of the theremin added another delicious parallel—between the single's theme and its use of an instrument the player never even touched." "Good Vibrations" does not technically feature a theremin, but rather an Electro-Theremin, which is physically controlled by a knob on the side of the instrument. It was dubbed a "theremin" simply for convenience. At that time, theremins were most often associated with the 1945 Alfred Hitchcock film Spellbound, but their most common presence was in the theme music for the television sitcom My Favorite Martian, which ran from 1963 to 1966. Britz speculates: "He just walked in and said, 'I have this new sound for you.' I think he must have heard the sound somewhere and loved it, and built a song around it." It is unclear whether Wilson knew that the instrument was not a real theremin. Brian credited his brother and bandmate Carl for suggesting the use of a cello on the track. He further stated that its triplet beat on the chorus was his own idea and that it was based on the Crystals' "Da Doo Ron Ron" (1963), produced by Spector. Conversely, arranger and session musician Van Dyke Parks said that it was himself who suggested having the cellist play triplets to Brian. Parks believed that having Brian exploit the cello "to such a hyperbolic degree" was what encouraged the duo to immediately collaborate on the never-finished album Smile. At some point, Wilson asked Parks to pen lyrics for "Good Vibrations", although Parks declined. Influences and final lyrics Wilson's cousin and bandmate Mike Love submitted the final lyrics for "Good Vibrations" and contributed its bass-baritone vocals in the chorus. He recalled that when he heard the unfinished backing track: "[It] was already so avant-garde, especially with the theremin, I wondered how our fans were going to relate to it. How's this going to go over in the Midwest or Birmingham? It was such a departure from 'Surfin' U.S.A.' or 'Help Me, Rhonda.'" Love said that he wrote the words while on the drive to the studio. Feeling that the