Information:  - Liverpool, in North West England, is a major city and metropolitan borough with an estimated population of 478,580 in 2015 within the City of Liverpool. Liverpool and its surrounding areas form the fifth largest metropolitan area in the UK, with an estimated population of over 2.24 million in 2011. The local authority is Liverpool City Council, which is the most populous local government district within the metropolitan county of Merseyside and the largest within the Liverpool City Region.  - Hard rock is a loosely defined subgenre of rock music that began in the mid-1960s, with the garage, psychedelic and blues rock movements. It is typified by a heavy use of aggressive vocals, distorted electric guitars, bass guitar, drums, and often accompanied with pianos and keyboards.  - "Beatlemania" is a term that originated and was coined during the early 1960s to describe the intense fan frenzy directed towards the English rock band the Beatles. The phenomenon began in 1963 and continued past the group's break-up in 1970, despite the band ceasing public performances in 1966.  - John Winston Ono Lennon, (born John Winston Lennon; 9 October 19408 December 1980) was an English singer and songwriter who co-founded the Beatles, the most commercially successful band in the history of popular music. With fellow member Paul McCartney, he formed a celebrated songwriting partnership.  - Skiffle is a music genre with jazz, blues, folk and American folk influences, usually using homemade or improvised instruments. Originating as a term in the United States in the first half of the 20th century, it became popular again in the UK in the 1950s, where it was associated with artists such as Lonnie Donegan, The Vipers Skiffle Group, Ken Colyer and Chas McDevitt. Skiffle played a major part in beginning the careers of later eminent jazz, pop, blues, folk and rock musicians and has been seen as a critical stepping stone to the second British folk revival, blues boom and British Invasion of the US popular music scene.  - Richard Starkey, (born 7 July 1940), known professionally as Ringo Starr, is an English musician, singer, songwriter and actor who gained worldwide fame as the drummer for the Beatles. He occasionally sang lead vocals, usually for one song on an album, including "With a Little Help from My Friends", "Yellow Submarine" and their cover of "Act Naturally". He also wrote the Beatles' songs "Don't Pass Me By" and "Octopus's Garden", and is credited as a co-writer of others, including "What Goes On" and "Flying".  - The counterculture of the 1960s refers to an anti-establishment cultural phenomenon that developed first in the United Kingdom (UK) and the United States (US) and then spread throughout much of the Western world between the early 1960s and the mid-1970s, with London, New York City, and San Francisco being hotbeds of early countercultural activity. The aggregate movement gained momentum as the American Civil Rights Movement continued to grow, and became revolutionary with the expansion of the US government's extensive military intervention in Vietnam. As the 1960s progressed, widespread social tensions also developed concerning other issues, and tended to flow along generational lines regarding human sexuality, women's rights, traditional modes of authority, experimentation with psychoactive drugs, and differing interpretations of the American Dream. Many key movements related to these issues were born, catalyzed, or advanced within the counterculture of the 1960s.  - This article is a list of cover versions recorded and released by the Beatles as a band or solo artists .  - Rock and roll (often written as rock & roll or rock 'n' roll) is a genre of popular music that originated and evolved in the United States during the late 1940s and early 1950s, from African-American musical styles such as gospel, jazz, boogie woogie, and rhythm and blues, with country. While elements of rock and roll can be heard in blues records from the 1920s and in country records of the 1930s, the genre did not acquire its name until the 1950s.  - The Beatles were an English rock band, formed in Liverpool in 1960. With members John Lennon, Paul McCartney, George Harrison and Ringo Starr, they became widely regarded as the foremost and most influential act of the rock era. Rooted in skiffle, beat, and 1950s rock and roll, the Beatles later experimented with several musical styles, ranging from pop ballads and Indian music to psychedelia and hard rock, often incorporating classical elements and unconventional recording techniques in innovative ways. In the early 1960s, their enormous popularity first emerged as "Beatlemania", but as the group's music grew in sophistication, led by primary songwriters Lennon and McCartney, they came to be perceived as an embodiment of the ideals shared by the counterculture of the 1960s.  - A ballad is a form of verse, often a narrative set to music. Ballads derive from the medieval French "chanson balladée" or "ballade", which were originally "danced songs". Ballads were particularly characteristic of the popular poetry and song of the British Isles from the later medieval period until the 19th century. They were widely used across Europe, and later in the Americas, Australia and North Africa. Ballads are 13 lines with an ABABBCBC form, consisting of couplets (two lines) of rhymed verse, each of 14 syllables.  - George Harrison, (25 February 1943  29 November 2001) was an English guitarist, singer, songwriter, and music and film producer who achieved international fame as the lead guitarist of the Beatles. Often referred to as "the quiet Beatle", Harrison embraced Hindu mythology and helped broaden the horizons of his fellow Beatles as well as their Western audience by incorporating Indian instrumentation in their music. Although most of the Beatles' songs were written by John Lennon and Paul McCartney, most Beatles albums from 1965 onwards contained at least two Harrison compositions. His songs for the group included "Taxman", "Within You Without You", "While My Guitar Gently Weeps", "Here Comes the Sun" and "Something", the last of which became the Beatles' second-most covered song.  - Sir James Paul McCartney, (born 18 June 1942) is an English singer-songwriter, multi-instrumentalist, and composer. With John Lennon, George Harrison, and Ringo Starr, he gained worldwide fame with the rock band the Beatles, largely considered the most popular and influential group in the history of pop music. His songwriting partnership with Lennon is the most celebrated of the post-war era. After the band's break-up, he pursued a solo career and formed the band Wings with his first wife, Linda, and Denny Laine.    What is the relationship between 'list of songs covered by the beatles' and 'song'?
Answer:
is a list of