Which tour presented Metallica's The Black Album songs in reverse order?

The 2012 European Black Album Tour presented Metallica’s The Black Album songs in reverse order. The unusual arrangement made the anniversary-style performances distinct from a standard album play-through.

Metallica had already built the record’s songs into permanent concert staples, especially “Enter Sandman,” “Nothing Else Matters,” and “Sad but True.” Playing the album backward allowed the band to close with “Enter Sandman,” the record’s famous opening track and lead single.

The tour followed the album’s immense long-term influence. Released in 1991, The Black Album had become Metallica’s best-selling record and one of the world’s best-selling albums. The reverse-order concept gave longtime listeners a different way to hear familiar material while keeping the full album central to the concert program.