Manipulate[
 Sound[{SoundNote["A", .5 x, "Guitar"], 
   SoundNote["A", .5 x, "Guitar"], SoundNote["E5", .25 x, "Guitar"], 
   SoundNote["E5", .25, "Guitar"], SoundNote["F5", .25 x, "Guitar"], 
   SoundNote["E5", .5 x, "Guitar"], SoundNote["A", .25 x, "Guitar"], 
   SoundNote["A", .5 x, "Guitar"], SoundNote["E5", .25 x, "Guitar"], 
   SoundNote["E5", .25 x, "Guitar"], 
   SoundNote["F5", .25 x, "Guitar"], 
   SoundNote["E5", .25 x, "Guitar"], SoundNote["A", .5 x, "Guitar"], 
   SoundNote["A", .5 x, "Guitar"], SoundNote["E5", .25 x, "Guitar"], 
   SoundNote["E5", .25 x, "Guitar"], 
   SoundNote["F5", .25 x, "Guitar"], SoundNote["E5", .5 x, "Guitar"], 
   SoundNote[{"C5", "E5"}, .25 x, "Goblins"], 
   SoundNote[{"C5", "E5"}, .25 x, "Goblins"], 
   SoundNote[{"A", "C", "E"}, .25 x, "Goblins"], 
   SoundNote[{"C5", "E5"}, .25 x, "Goblins"], 
   SoundNote[{"A", "C", "E"}, .25 x, "Goblins"], 
   SoundNote[{"C5", "E5"}, 1 x, "Goblins"]}], {x, 1, 4}]