2012 and 2013 are the 'Tracks' (Instrumentals)
for two different arrangements of Smokey Mountain
Boy and There's Gold In The Mountains and were actually used in the movie.
Although unlikely, it is unsure if Elvis did a vocal overdub to one
of these 'Tracks' on October
10 (2018). More likely the production number 2018 was reserved for but not used for a vocal overdub, as sometimes happened with movie company recording sessions.
Thanks to Kevan Budd.