Now, they're taking on Sir Mix-a-Lot.
The new orchestral arrangement was written by composer Gabriel Prokofiev. He tells The Quietus, "All of the most famous people had been done. But when I got the list, the one person who hadn't been done who I thought were really interesting was Sir Mix-a-Lot. He's a Nineties rapper; he's quite humorous and a fun guy. So I'm orchestrating two of his most famous hits, and he's actually going to rap on stage with orchestra."