I hope Murray Gold decides to tone down the bloody orchestra, if Matt Smiths first scene is anything to go by it's gone back to the brooding sound that the first series had, from Series 2 onwards the orchestra score just got louder and louder and The End of Time had a terrible score for most part because it was all over the damn place, only good parts were the re-use of the score from Waters of Mars during 10's final scenes along with of course rose's Theme, which was made during Series 1 when the soundtrack was more "Alien" and had a darker feel to it.
Also, I don't know who decided it, but Donna's theme and the score whenever Donna is on screen after Journeys End, why the hell did Murray Gold turn it into a cartoon when she was around, all those boings, and drum pops every time Donna nearly saw The Doctor, bloody hell.