With 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,
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, the album yielded two number one singles on the
Billboard
Mainstream Rock Songs chart, "Painkiller" and "I Am Machine," before its release. ~ Marcy Donelson