Mark Covino and Jeff Howlett's documentary, out on Friday, is simply titled A Band Called Death. It provides a thorough biography of an under-appreciated protopunk garage band that existed on the cusp of punk. They were called Death, obviously. The Detroit band, founded in 1971 by three brothers—David Hackney (guitar), Dannis Hackney (drums) and Bobby Hackney (bass, vocals)—was disbanded in 1977, but managed to record an album's worth of songs in demo sessions. When the band was rediscovered by record collectors, punk obsessives, and underground DJs in the 2000s, the Hackneys were hailed as visionaries.