Beck and Chris Martin

Beck and Chris Martin perform onstage during The 57th Annual Grammy Awards at the STAPLES Center on Feb. 8, 2015 in Los Angeles, California. 

Kevin Winter/WireImage

Beck brought Chris Martin on stage to bring a serious injection of drama to his song "Heart Is a Drum," off the singer's sombre 2014 album Morning Phase, which won Beck the Album of the Year award mere minutes before.

The song was a downtempo performance in a night filled with them -- but still made plain why this once-loser has become the king of a lovely type of hushed rock and roll.