Since the vast majority probably doesn't care, they shouldn't be needing to "test" the jazz for feedback. It should be changed, however, because the production songs have been playing for years, and it would be a small step back to classic TWC. A few people I have talked to have personally told me the vocals did not mix well with the intellisar narration due to contrasting voices. Moreover, I find it laughable TWC felt the need to test something like jazz, then take it off as if they were cautious over something that most don't care about. They most obviously do.
