Настоящее простое – agree, changes, buys
Настоящем продолжительное - is changing
Прошедшее простое – developed,
started, could be called, created, appeared, decided, sold, becameПрошедшее совершённое -
Прошедшее продолжитльное - was spreading, was playing
Настоящее совершённое - has spread
The popularity of western
music
has spread (Present Perfect) all over the world. Pop music
developed
(Past Simple) into a global industry in the second half of the 20th century. It
started (Past Simple) with Elvis Presley and the Beatles, who could be
called (Past Simple Passive) the word's first rock stars. These musicians
created
(Past Simple) a new era, allowing other singers to become internationally
famous.
Rock'n'roll
was spreading (Past Continuous) throughout the continents
when a small group in the north-west of England
appeared (Past Simple).
At that time, the group
was playing (Past Continuous) in small halls in
Liverpool. They
decided (Past Simple) to change their name from the
Quarrymen to the Beatles and in the following eight years, they
sold (Past
Simple) millions of copies all over the world and
became (Past Simple) as
popular as Elvis.
Both music professionals and fans
agree (Present Simple) that Elvis
Presley and the Beatles
are the most valuable phenomena (Present
Simple) to have entered the pop music world of the 20th century. They
started
(Past Simple) a new era that then
created (Past Simple) a new global
industry.
But pop music
changes (Present Simple) quickly. It
is sometimes
difficult
to understand (Present Simple) why a group or a singer
is successful
(Present Simple) and why the public
buys (Present Simple) their music.
For this reason, the industry
is constantly
changing (Present
Continuous).