Noun
Merseybeat (uncountable)
The characteristic style of music produced by pop groups from Merseyside between 1958 and 1964, typified by the Beatles.
Doo wop would be a major influence on vocal surf music, soul and early Merseybeat, including The Beatles. Source: Internet
In the 1960s Liverpool was the centre of the " Merseybeat " sound, which became synonymous with The Beatles and fellow Liverpudlian rock bands. Source: Internet