Simplify the following text for a Grade 6 native English-speaking person.
Original: In the late '90s , many melodic death metal bands changed their style of playing by adding more melodic elements ; more melodic choruses and riffs and making more prominent use of keyboards , and their lyrics , unlike death metal , did not focus on death , violence , gore , horror , or blood for the most part .
Simplified: Melodic death metal is a lot like death metal but , as the name suggests , it is more melodic .