Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:2/4
K:G
['', 'g fdef', 'BddB edef |{a} g(f/e/) dc BG (A/c/)(A/F/)']  
X:1
L:1/8
M:2/4
K:G
 g |: fdef | (g/f/)(g/a/) gg | fdef | [gBD]3 g | fdef |{a} g(f/e/) dc | BG (A/c/)(A/F/) |1 G3 g :|2 
 G3 B |]: ceec | BddB | ceec | BddB | edef |{a} g(f/e/) dc | BG (A/c/)(A/F/) |1 G3 B :|2 G3 z |]  