Sound effect guitar. Don't play loud. Nothing special.
Story: The war in 1917 is going badly for two hobos in a forward trench. They make guitars out of fragments and barbed wire, bang shell casings around. Try to play while the bombs go off and the bullets whistle. Psychopathic coward bully clubs on both sides of the wire add their traditional 'spice', which Apple and Lucky turn into unpublished songs. See my facebook post for a statement.