Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:4/4
K:G
['', 'DG B2 DB c2 Bc dGBd G2', '', 'dc B2 BA']  
X:1
L:1/8
M:4/4
K:G
 DG |: B2 DB c2 Bc | dGBd G2 AB | c2 dc BdcB | A2 AB A2 DG | B2 DB c2 Bc | dGBd G2 FG | 
 E2 c2 BAGF | A2 GF G2 :| dc |: B2 BA Ggfg | edce d2 dc | B2 BA GedB | A2 AB A2 dc | B2 BA Ggfg | 
 edce d2 Bc | dgfg ecAF | G2 GF G2 :|  