Video: Miley Cyrus' 'Wrecking Ball' mashed up with Sinead O'Connor, Mumford

The unlikely beef between Miley Cyrus and Sinead O’Connor has reached its natural 21st century conclusion: a mash-up has united the pair in musical matrimony. The two singers caused some hubbub on the Internet last week after O’Connor wrote an open letter to the former Hannah Montana suggesting she rein it in a bit.