Seems to make an interesting combination, what do you guys think? Miley's vocals have been adjusted to match the tempo of 'What's My Age Again'. Mash-ups can be hit and miss, but somehow this just works, even when it doesn't seem like it should. Blink's backing for 'What’s my age again' and Miley's vocal for 'Wrecking Ball' gel remarkably well, turning a pop track into a rock hit! But don’t take our word for it, check this video out for yourself!