Compose a piece of music that follows the specified structure and incorporates the given theme.
X:1
L:1/8
M:6/8
K:G
['Ggf ecA E3'  
X:1
L:1/8
M:6/8
K:G
|: B |"G" dGF GDB | G3 DBD |"Am" EcB ABG |"D7" FED cBA |"G" BdB G3 |"C" EGE cEG |"G" DGc"D7" BEF | 
 AGF"G" G2 :: A |"G" B3 Ggf |"Am" ecA E3 |"D7" DFA f3 |"A7" ed^c"D7" d2 =c |"G" BdB Ggf | 
"Am" ecA E3 |"G" DGc"D7" BEF | AGF"G" G2 :: D |"G" GBd g3 |"C" ecB c2 B |"A7" A^ce a2 g | 
"D" fd^c def |"G" gdB Ggf |"Am" ecA E3 |"G" DGc"D7" BEF | AGF"G" G2 :|  