I remember Motorhead playing a gig in their house, for no apparent reason
Apologies if everybody already knows this, but the reason is that by including a musical number, it would be classed as light entertainment rather than comedy, and get a bigger budget.
Well, I didn't know that - thanks! I remember Ricky Gervais parodying this kind of thing brilliantly by having Coldplay play a gig in Extras' sitcom-within-a-sitcom, then awkwardly shoehorning some self-promotion into the dialogue. Not that I have any time for Coldplay, mind you, or Ricky Gervais much these days too for that matter.
Yeah, it was
Ace of Spades Lemmy and Co were belting out in that student house. It worked well with the general chaos that was going on with the characters simultaneously.