I concur. It's very redundant.
What animatore said is right. A repetitive tune just becomes annoying. However, the actual content in the song is really good. Although, in some cases new tunes aren't necessary to improve the song. Another option would be to shorten the song. The right sound might already be in the song. A good idea now would be to make it more succinct.
It really gets annoying and boring....you need to make new tunes and add it to youre song.