All of the music performed by the band is played live by the actors on screen.
Premiered at the 2014 Sundance Film Festival. All the audience attending were given Frank masks to wear.
The scene in which Frank chases Jon whilst trying to hit him with a shovel and yelling "It'll be worth it!" was improvised by Michael Fassbender. Frank was actually just supposed to be running around, not involving Jon in any way.
Frank is based on late British comedian Chris Sievey's iconic comedy character Frank Sidebottom.