duo had any more songs to offer, and after a break from the meeting, they returned with an early version of "Mrs. Robinson". They had been working on a track titled "Mrs. Roosevelt", and returned to perform it for Nichols. He was ecstatic about the song, later commenting, "They filled in with dee de dee dee de dee dee dee because there was no verse yet, but I liked even that." Garfunkel later expanded upon the song's placement in The Graduate: The film version employs a Bo Diddley beat, unlike the studio version. The final version of "Mrs. Robinson" was completed on February 2, 1968, at Columbia Studio A in New York City. The recording was released more than three months after the release of The Graduate, but through its numerous radio plays became an important cross-promotion of the film during its initial run in theaters. A louder and punchier bass drum is present on the promo mix, which was done to accommodate for the limited dynamic range produced by AM radio. Cash Box called the single version a "booming-beat satire with the glittering vocals and unique lyric material that hallmark the duo's material." Composition Simon's inclusion of the phrase "coo-coo-ca-choo" is a homage to a lyric in the Beatles' "I Am the Walrus". References in the last verse to Joe DiMaggio are perhaps the most discussed. Simon, a fan of Mickey Mantle, was asked during an intermission on The Dick Cavett Show why Mantle was not mentioned in the song instead of DiMaggio. Simon replied, "It's about syllables, Dick. It's about how many beats there are." Simon happened to meet DiMaggio at a New York City restaurant in the 1970s, and the two immediately discussed the song. DiMaggio said "What I don't understand, is why you ask where I've gone. I just did a Mr. Coffee commercial, I'm a spokesman for the Bowery Savings Bank and I haven't gone anywhere!" Simon replied "that I didn't mean the lines literally, that I thought of him as an American hero and that genuine heroes were in short supply. He accepted the explanation and thanked me. We shook hands and said good night". In a New York Times op-ed in March 1999, shortly after DiMaggio's death, Simon discussed this meeting and explained that the line was meant as a sincere tribute to DiMaggio's unpretentious and modest heroic stature, in a time when