It was on the 4 September session that, according to McCartney, Martin suggested using a harmonica for the Love Me Do song. However, Lennon’s harmonica part was present on the Anthology 1 version of the song recorded during the 6 June audition with Pete Best on drums. Also, Martin’s own recollection of this is different, saying: “I picked up on ‘Love Me Do’ because of the harmonica sound”, adding: “I loved wailing harmonica — it reminded me of the records I used to issue of Sonny Terry and Brownie McGhee. I felt it had a definite appeal.” Sonny Terry and Brownie McGhee would be an influence on Bob Dylan, who, in turn, would later influence the Beatles.
Lennon had learned to play a chromatic harmonica that his Uncle George (late husband of his Aunt Mimi) had given to him as a child. But the instrument being used at this time was one stolen by Lennon from a music shop in Arnhem, the Netherlands, in 1960, as the Beatles first journeyed to Hamburg by road. Lennon would have had this with him at the EMI audition on 6 June as Bruce Channel’s “Hey Baby”, with its harmonica intro, and a hit in the UK in March 1962, was one of the thirty three songs the Beatles had prepared (although only four were recorded: “Bésame Mucho”; “Love Me Do”; “P.S. I Love You” and “Ask Me Why”, of which only “Bésame Mucho” and “Love Me Do” survive and appear on Anthology 1). Brian Epstein had also booked American Bruce Channel to top a NEMS Enterprises promotion at New Brighton’s Tower Ballroom, in Wallasey on 21 June 1962, just a few weeks after “Hey Baby” had charted, and placed the Beatles a prestigious second on the bill. Lennon was so impressed that night with Channel’s harmonica player, Delbert McClinton, that he later approached him for advice on how to play the instrument. Lennon makes reference also to Frank Ifield’s “I Remember You” and its harmonica intro, a huge number one hit in the U.K July 1962, saying: “The gimmick was the harmonica. There was a terrible thing called “I Remember You”, and we did those numbers; and we started using it on “Love Me Do” just for arrangements”. The harmonica was to become a feature of the Beatles’ early hits such as “Love Me Do”, “Please Please Me” and “From Me to You” as well as various album tracks. Paul McCartney recalled, “John expected to be in jail one day and he’d be the guy who played the harmonica.”
Martin came very close to issuing “How Do You Do It?” as the Beatles’ first single (it would also re-appear as a contender for their second single) before settling instead on “Love Me Do”, as a mastered version of it was made ready for release and which still exists in EMI’s archives. Martin commented later: “I looked very hard at ‘How Do You Do It?’, but in the end I went with ‘Love Me Do’, it was quite a good record.” McCartney would remark: “We knew that the peer pressure back in Liverpool would not allow us to do ‘How Do You Do It’.”