Difference between local and global revision

Local revision is using similar things, for example, songs and changing one small detail while still keeping it the same. In the example in class, the beginning of the two One Republic songs were the same except for the different instruments used in the beginning and Timberland was featured in one of the versions. The basic composition of the two different versions were very close to each other and basically the same. Some people could probably not even tell a difference in the beginning of the two songs and except for the fact that Timberland is featured, would probably think that the two songs are exactly the same. Many artists use local revision and create different versions of their songs that are very similar, just like the way One Republic did. Global revision is a lot different from local revision. The background and concept of the two different things being compared are completely different but you can still tell that the two are comparable. In the example used in class, the Daft Hands song and the Kanye West song, the basic beat of the music was the same but the two songs were completely different. The Daft Hands version had no words but the words written on the hands and just had the beat of the song while the Kanye version was the full song with words and a different beat and style. The influence of the two songs were the same but were completely different from each other.