The use of sampling music or borrowing rhythms and sounds from previous existing music, has helped universalize the music form. Music is about adopting other people's music and there are very few original tracks of their own. The likes of Puff Daddy, KRS-1, and the Notorious B.I.G. all have followed this trend and have succeeded from it. One of the many interesting things presented at the lecture was that many samples derive from such things as jazz and blues music during the middle of the century, as well as slave songs that were sung long ago during the days of the Civil War. The components of these songs are very similar.
Lyric content is very important.
This form of music has evolved increasingly over the years, but the roots still remain in tact. This strong musical force has been around for years and will continue to impact the world with it's voice.