HUMANWith lead singer Adam Gontier leaving the band in 2013, Human is Three Days Grace's first album with a new vocalist, bass player Brad Walst's brother, Matt Walst (My Darkest Days), who had done some co writing on previous releases. A darker, loss inspired work, Human was also informed by struggles around them with personal issues and substance abuse. Written largely on the road and produced by Gavin Brown, who also produced their self titled debut,