Read this: Why Miley Cyrus making a Metallica covers album is a good thing
Anyway, she continues: "So I did a Metallica cover of Nothing Else Matters featuring Elton John on the piano. I've got Yo-Yo Ma, [Red Hot Chili Peppers drummer] Chad Smith – just so many all-stars.
"I'm so excited about this collaboration. Andrew Watt produced it, and I'm really stoked. I mean, having Elton John and Metallica and me – I love it when ingredients don’t quite fit, you know? Or it seems like a concoction that no-one would ever put together, and you've got to have someone wild enough like Watt that will take that risk."
Watch the full interview below (there's a brief quote at the start, and then the full comment begins at 7:50):