Mastodon Emperor Of Sand (Reprise/Warner) After having spent the last few years stretching stylistically in a few different directions (The “White Walker” single found a home as the lead track for a season of HBO’s Game Of Thrones, 2014’s Once More ‘Round The Sun say the band get leaner and almost blurring the lines between metal and punk rock a bit), there’s something refreshing and exciting about the fact that Mastodon has made a glorious return to the sort of...