IS
Understandable considering the demographic of their audience, they're not going to be in the mood for banter or high jinks. I'd imagine it's not exactly their usual playlist, they'll have been very careful with what they're playing.
Listening to Radio 1 and Nick Grimshaw mentioned they're playing all music this morning, though they don't appear to be playing anything particulary sombre, just the usual playlisted pop music.
Understandable considering the demographic of their audience, they're not going to be in the mood for banter or high jinks. I'd imagine it's not exactly their usual playlist, they'll have been very careful with what they're playing.