Develop a musical composition using the outlined alphabetical depiction of the structure and the provided theme.
X:1
L:1/4
M:3/2
K:G
['e/f/ g .B G B2', 'e/f/ g .d g B g']  
X:1
L:1/4
M:3/2
K:G
 e/f/ g .B G B2 | G .g g a g e | e/f/ g .B G B2 | A .a a3/2 g/ .f d | e/f/ g .B G B2 | 
 A/B/c/d/ e/f/g/a/ .g e | e/f/ g .B G B2 | A/B/c/d/ e/f/g/e/ f d || e/f/ g .d g B g | 
 G .g g a g e | e/f/ g .d g B g | A .a a3/2 g/ .f d | e/f/ g .d g B g | A/B/c/d/ e/f/g/a/ .g e | 
 e/f/ g .d g B g | A/B/c/d/ e/f/g/e/ f d ||  