A Third (unfinished) Album from 1973?
In the movie a couple of songs are played and its mentioned they are from a Third "Unfinished" album from 1973.
During the main film that third album is never discussed. In fact, Producer Steve Rowland chokes up as he plays the final cut from the second album and he says that not only was it the last cut on that album, but "the last song Rodriguez ever recorded". It's also mentioned that the artist was cut from his record label soon after its release.
So who produced this 3rd album? Where? With what equipment and funds? Remember, in 1973 there were no home computers to mix on and home recording studios were very expensive. In the movie, the tracks sound pretty professional and complete.