John Lennon said: "It was Elvis who really got me buying records. I thought that early stuff of his was great. The Bill Haley era passed me by, in a way. When his records came on the wireless, my mother used to hear them, but they didn’t do anything for me. It was Elvis who got me hooked on beat music. When I heard 'Heartbreak Hotel', I thought ‘this is it’ and I started to grow sideboards and all that gear" He also commented: "Nothing really affected me until I heard Elvis. If there hadn't been an Elvis, there wouldn't have been a Beatles."

The Beatles were an English pop and rock group from Liverpool whose members were John Lennon, Paul McCartney, George Harrison and Ringo Starr.

In the United Kingdom, The Beatles released more than 40 different singles, albums, and EPs that reached number one. This commercial success was repeated in many other countries: their record company, EMI, estimated that by 1985 they had sold over one billion discs and tapes worldwide. The Beatles are the best-selling musical act of all time in the United States, according to the Recording Industry Association of America.

In 2007, Rolling Stone magazine ranked The Beatles #1 on its list of 100 Greatest Artists of All Time. According to that same magazine, their innovative music and cultural impact helped define the 1960s, and their influence on pop culture is still evident today.

The Beatles led the mid-1960s musical "British Invasion" into the United States. Although their initial musical style was rooted in 1950s rock and roll and homegrown skiffle, the group explored genres ranging from Tin Pan Alley to psychedelic rock. Their clothes, styles, and statements made them trend-setters, while their growing social awareness saw their influence extend into the social and cultural revolutions of the 1960s.

The Beatles' constant demands to create new sounds on every new recording, combined with George Martin's arranging abilities and the studio expertise of EMI staff engineers such as Norman Smith, Ken Townsend and Geoff Emerick, all played significant parts in the innovative sounds of the albums Rubber Soul (1965), Revolver (1966) and Sgt. Pepper's Lonely Hearts Club Band (1967).

The Beatles continued to absorb influences long after their initial success, often finding new musical and lyrical avenues by listening to their contemporaries. Among those influences were Bob Dylan, who influenced songs such as "You've Got to Hide Your Love Away" and "Norwegian Wood (This Bird Has Flown)". Other contemporary influences included the Byrds and the Beach Boys, whose album Pet Sounds was a favourite of McCartney's. Beatles producer George Martin stated that "Without Pet Sounds, Sgt. Pepper wouldn't have happened... Pepper was an attempt to equal Pet Sounds." After Sgt. Pepper was released, Wilson was so despondent that he went to bed for months.

Along with studio tricks such as sound effects, unconventional microphone placements, tape loops, double tracking and vari-speed recording, The Beatles began to augment their recordings with instruments that were unconventional for rock music at the time. These included string and brass ensembles as well as Indian instruments such as the sitar as in "Norwegian Wood (This Bird Has Flown)" and the swarmandel as in "Strawberry Fields Forever". They also used early electronic instruments such as the Mellotron, with which McCartney supplied the flute voices on the intro to "Strawberry Fields Forever", and the ondioline, an electronic keyboard that created the unusual oboe-like sound on "Baby You're a Rich Man".

Beginning with the use of a string quartet (arranged by George Martin with input from McCartney) on "Yesterday" in 1965, The Beatles pioneered a modern form of art song, exemplified by the double-quartet string arrangement on "Eleanor Rigby" (1966), "Here, There and Everywhere" (1966) and "She's Leaving Home" (1967). A televised performance of Bach's Brandenburg Concerto No. 2 directly inspired McCartney's use of a piccolo trumpet on the arrangement of "Penny Lane". The Beatles moved towards psychedelia with "Rain" and "Tomorrow Never Knows" from 1966, and "Lucy in the Sky with Diamonds", "Strawberry Fields Forever" and "I Am the Walrus" from 1967.

These links go to Amazon.com, where you can read many reviews and track listings on each original Beatles album.

On 7 February 1964, a crowd of four thousand fans at Heathrow Airport waved to The Beatles as they took off for their first trip to the United States as a group. They were accompanied by photographers, journalists (including Maureen Cleave), and Phil Spector, who had booked himself on the same flight. The pilot had radioed ahead, and as they prepared to land said, "Tell the boys there's a big crowd waiting for them." New York's newly-renamed JFK Airport had never experienced such a crowd, estimated at about 3,000 screaming fans. After a press conference (where they first met Murray the K) they were put into limousines and driven to New York City. On the way, McCartney turned on a radio and listened to a running commentary: "They [The Beatles] have just left the airport and are coming to New York City..." After reaching the Plaza Hotel, they were besieged by fans and reporters. Harrison had a fever of 102 °F (39 °C) the next day and was ordered to stay in bed, so Neil Aspinall replaced him for the first television rehearsal.

Their first live American television appearance was on the The Ed Sullivan Show on 9 February 1964. The next morning practically every newspaper wrote that The Beatles were nothing more than a "fad", and "could not carry a tune across the Atlantic". Their first American concert appearance was at Washington Coliseum in Washington, D.C. on 11 February 1964.