People covering other people's songs has been going on since the dawn of time. Covering someone's record sleeve, however: that's altogether rarer.
Brazilian art director - and huge music fan - Bruno Leo Ribeiro set himself the ongoing challenge to create new covers for his favourite albums, with one hitch: they had to be completed in the time it takes for the record to play.
That enabled some to be completed at a leisurely pace - Daft Punk's Random Access Memories allowed him a full 74 minutes - with others needing to be done at a breakneck speed. While this could be a disadvantage, one imagines that workrate while listening to Slayer's classic Reign In Blood - just 29 minutes long - would be pretty high.
All of them are fantastic: we've picked our favourite 20 below; head over to his tumblr to see the full collection so far.
(Images: Bruno Leo Ribeiro)