Construct a piece of music by converting the stated musical sequence into an alphabetical format and integrating the supplied motif.
X:1
L:1/8
Q:1/4=100
M:4/4
K:C
['a/g/f/e/ cg', 'E/F/G cG']  
X:1
L:1/8
Q:1/4=100
M:4/4
K:C
"_Allegro" g | a/g/f/e/ cg egcg | a/g/f/e/ cg eddg | a/g/f/e/ cg egde | cAGE C/C/C C :: F | 
 E/F/G cG AGcG | E/F/G cE dDDF | E/F/G cG EGcg | fede c/c/c c :|  