I've had a little 2 second snippet of music in my head all day, finally figured out what it was from, but have had no luck searching for what the song might be.
It's a random bit of music used in V For Vendetta, the song that is playing on the clock radio that wakes up the inspector the morning of V's big day.
Guess I might look through the credits but not sure they would bother including something only used for 1 or 2 seconds.