Directed by first-time feature filmmakers Scott Mayo and Trey Hill, the powerful and moving documentary Loud Krazy Love (available on digital and DVD) tells the remarkable true story journey that guitarist Brian “Head” Welch took, from becoming a global rock star, to being a full-blown drug addict, to wanting to be a good father, to discovering his own faith and spirituality, and what all of that meant for his future. It was a long winding road to sobriety that eventually led him back to his bandmates in Korn, eight years after he quit in 2005, and to a …