And here’s something for the things I learned today thread. The joys of pre-CGI life.
Deliverance, a scene depicts Billy Redden playing it opposite Ronny Cox, who joins him on guitar. Redden plays “Lonnie,” a mentally challenged and inbred, but extremely gifted, banjo player. Redden could not actually play the banjo and the director thought his hand movements looked unconvincing. A local musician, Mike Addis, was brought in to depict the movement of the boy’s left hand. Addis hid behind Redden, with his left arm in Redden’s shirt sleeve. Careful camera angles kept Addis out of frame and completed the illusion, though anyone familiar with bluegrass banjo playing can see that the left-hand movements do not match up with the music produced, and that the banjo being used (an open-back instrument) could never produce the music one hears (clearly from a resonator banjo).