©2010 Varèse Sarabande and Michael Giacchino
The "Monster's 2nd Motif" plays during a few of the smoke monster and the Man in Black's season 6 scenes.
Full list of appearances
This cue appears to be derived from a portion of the track "Swamp and Circumstance" from the movie Land of the Lost, which was also scored by Michael Giacchino.
"Mother of Sorrows", "Smokey and the Bandits" and "Sundown" use the motif.