Seismographs are usually used to measure when pieces of the earth slam into each other, but they’re pretty good at measuring whenever Metallica is on the stage.

Over 60,000 fans gathered at Virginia Tech's Lane Stadium for a night that created ground tremors. Metallica visited Blacksburg on Wednesday night for a stop on the M72 World Tour, taking the stage after openers Pantera and Suicidal Tendencies.

There are many great entrances in college football, but few are as electric or as loud as Virginia Tech running out to Metallica's "Enter Sandman" for a big game (especially at night).  What started as a fan's choice between three songs -- "Enter Sandman,