проверьте верно ли я все написала ,ничего не потеряла?I learned at

Проверьте верно ли я все написала ,ничего не растеряла?
I learned at the English lessons about the history of rock and pop music in different years ,from 1950 to 2000 . In those days, sang the singers as Elvis Presley ,Elton John , David Bowie and also the Beatles .Visited on the pages of the textbook in a musical tour of Britain .Find out about who's singing and playing what instruments .this knowledge will help me in life because you know the history of music in past and present ,interested in the history of foreign music and national instruments .