Biffy Clyro – Mountains bass cover Jun 12, 2015 Cover, Cover Biffy Clyro, Cover Hard Rock, Cover Mountains, Only Revolutions, Bass cover of the song „Mountains“ by biffy clyro. Like 0 Thanks! You've already liked this « BIFFY CLYRO – 57 (Drum cover) » Cloud of Stink – Biffy Clyro (Drum Cover)