Deadmau5 and other weird artists

Son no 3 is a teenager – so I am obliged to listen to his “music” in the car in the mornings, otherwise I am not considered cool or with it or whatever term they use nowadays.

Anyway, this morning is no different – we are listening to his crap.  He describes it as “Dubstep” or “Club music”.  The song we are listening to actually sounds like music for a change so I look at my LCD screen and it says we are listening to Deadmau5.  So I query this with my son and the conversation goes as follows:

Me:  What are we listening to?

Son 3: Deadmau5

Me: (confused): But I thought Deadmau5 was a male

Son 3: He is

Me: But this is a female singing

Son 3 (rolling eyes): Because Deaumau5 doesn’t sing

Me: So who is singing?

Son 3 (pointing to title of song on the LCD panel) : It says here featuring Greta ……  (whoever… – I forgot who – never heard of her anyway)

Me:  So is she part of Deadmau5?

Son 3 (now annoyed with me):  I’ve told you before – Deadmau5 is a DJ – he doesn’t sing – he only does the background music!

So now I am really confused – in my day that used to be called a Composer – have I missed something?