the Mersey beat

Từ điển Oxford Advanced Learner 8th

the Mersey beat [the Mersey beat] BrE NAmE (alsothe Mersey sound)
the name used to describe a style of pop music which was created and played by a number of groups from ↑Liverpool in the early and mid 1960s, and which became very popular all over the world. The most famous of these groups was the ↑Beatles.