I believe the clip you have just posted is the newer chime for the WWTP jingles. The original Tidal Wave loop still uses the older one which is a sharper glockenspiel sounding ding, rather than the "piano swipe". I say "newer chime", it's at least 7 years old now!
In regards to The Noise, as much as I hated the chart music at Thorpe before, I do think this actually sounds okay now. It's a much more professional sounding mix than last year and even more so now the pitch for the chart music is back to normal. As long as it's self contained to the Dome and the entrance then I think it's pretty nifty now. The old mixture of Rocky Express, the Flume and other bits was a bit random and out of place. As Phill has said it is indeed just like the old Thorpe Park Radio days, I suspect the issue here is that people just don't like the actual songs! I'll be the first to admit that when I hear a song in the loo's that I like I'm all "Yeaaaaahhhh!" but as soon as it's a song I don't like then I detest the whole thing and long for Rocky Express back!
I do firmly think all the rides should have their own individual themes and nothing else unless it's an event. It was lovely to hear Vortex playing it's proper audio again and I love the Inferno station set up now. Just need to get Colossus back to the correct pitch and the proper station audio restored!