Complex sentence: Over the years many new sounds have been experimented with, and in the early 90's, Dr. Dre was one of the first to put a melody in a hip hop beat, and this influenced many producers coming after him.
Split into simpler sentences: Over the years many new sounds have been experimented with. In the early 90's, Dr. Dre was one of the first to put a melody in a hip hop beat, and this influenced many producers coming after him.