Christian rock band Skillet, fronted by John Cooper, is launching a new chapter of music while celebrating one of the most successful songs in Christian music history.

Skillet's "Monster" earned a spot in Spotify's Billions Club after surpassing four billion streams since its initial release in 2009.

When a small, yet vocal group of critics labeled Skillet’s new Christmas single, a rock 'n’ roll version of “O Come, O Come Emmanuel,” as “demonic,” frontman John Cooper didn’t react defensively.