Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
['d2 cA', '', 'dggf g2']  
X:1
L:1/8
Q:1/8=180
M:4/4
K:G
 A | B2 dB cAAc |1 d2 cA BGG :|2 d2 cA BGB || c |: dggf gf d2 | dcAB cAGB | dggf gfde | 
 =f2 ed c2 Bc | dggf g2 fd | dcAB cABG | dggf g2 bg | g2 bg fdcA :|  