Simplify the following text for a Grade 9 native English-speaking person.
Original: Britpop emerged from the British independent music scene of the early 1990s and was characterised by bands influenced by British guitar pop music of the 1960s and 1970s .
Simplified: Britpop came out of the British independent music scene of the 1990s and affected , or changed , by British guitar pop music of the 1960s and 1970s .