Soul Music (Discworld Novel 16) by Terry Pratchett (Kindle Edition)

'This didn't feel like magic. It felt a lot older than that. It felt like music.'

Being sixteen is always difficult, but it's even more so when there's a Death in the family. Susan hasn't exactly had a normal upbringing, with a skeletal grandfather who rides a white horse and wields a scythe.

When Death decides he needs a well-earned break, he leaves Susan to take over the family business. The only problem is, everyone mistakes her for the Tooth Fairy . . .

Well, not the only problem. There's a new, addictive music in Discworld. It's lawless. It changes people. It's got a beat and you can dance to it.

It's called Music With Rocks In. And it won't fade away . . .