The Beatles were composed of:
John Lennon who was a vocalist, rhythm guitarist, keyboards, harmonica and songwriter.
Paul McCartney was a vocalist, bass guitarist, guitarist, keyboards, and songwriter.
George Harrison who was a lead guitar, sitar, vocals and songwriter. 
In 1961, Brian Epstein, the manager of the North End Music Shop in Liverpool, became the manager of The Beatles after hearing them play at a club called the Cavern where The Beatles performed most of their early gigs. Soon after, Parlophone agreed to have a recording session with the group which was held at Abbey Road Studio. John Lennon and Paul McCartney wrote most of the songs they performed like "Please Me Please" or "Love Me Do", etc and most fo their songs were recorded at Abbey Road Studio.
What Influenced the Beatles?
The Beatles were influenced by skiffle. Skiffle was a "kind of souped up folk music that had started a craze among British teenagers" (Spitz 2). They used homemade instruments like washtubs with string and broom attachment. The music produced was an strange assortment of American Blues, folk songs, and spirituals. They were also influenced by Hank Williams, Woody Guthrie, Leadbelly Elvis Presely, and of course by rock and roll.
John Lennon's favorite guitar was a Rickenbacker 325 which he had bought in Hamburg and which made him the first British musician to buy and use an American guitar. The Rickenbacker 325 was a rare guitar when Lennon had bought in 1960 because it was one of only eight natural finish 325s that were made in 1958. Also because it had no sound hole or elevated pickguard but still was unusually light weight. Lennon also made some modifications to the guitar and painted it black ( ).
Paul McCartney's favorite intrument was a 1961 Höfner Bass. He liked it because of its rich tone and sound quality and because it was wasy to play left handed.(rockband)
