On this day 9th September 1963, The Beatles were at No.1 on the UK singles chart with 'She Loves You.' 'Please Please Me' was at No.1 on the UK album chart. 'She Loves You' became The Beatles' best-selling single in the United Kingdom, and was the best selling single in Britain in 1963.
"She Loves You" is a song written by John Lennon and Paul McCartney based on an idea by McCartney, originally recorded by The Beatles for release as a single in 1963. The single set and surpassed several records in the United Kingdom charts, and set a record in the United States by being one of the five Beatles songs which held the top five positions in the American charts simultaneously on 4 April 1964. It is The Beatles' best-selling single in the United Kingdom, and was the best selling single in Britain in 1963.
"She Loves You" was credited to "Lennon–McCartney" as were all subsequent songs written by the pair and released during the remainder of the band's tenure. With the exception of the single version of "Love Me Do" and "P.S. I Love You", all prior songs were credited as "McCartney–Lennon". The sequence was a source of controversy when McCartney changed it to "McCartney–Lennon" for some live versions released later in his career.
This was the first song by The Beatles to be heard by a substantial number of Americans; the only United States release by The Beatles that had even charted before that was "From Me to You", which lasted three weeks in August 1963, never going higher than number 116.In November 2004, Rolling Stone ranked "She Loves You" as the 64th Greatest Song of All Time. In October 2005, Uncut magazine named "She Loves You" as the third biggest song that changed the world, behind Elvis Presley's "Heartbreak Hotel" and Bob Dylan's "Like a Rolling Stone".
In August 2009, at the end of its "Beatles Weekend", BBC Radio 2 announced that "She Loves You" was The Beatles' all-time best-selling single in the UK based on information compiled by The Official Charts Company. (Info from thisdayinmusic & Wiki)