Produce music using the specified musical structure depicted in letters along with the provided musical theme.
X:1
L:1/8
M:6/8
K:G
['D G2 d BGB c2 A F2', 'Bcd e3 ABc']  
X:1
L:1/8
M:6/8
K:G
|:"^A" D | G2 d BGB | c2 A F2 D | BAG E2 D | DEF G2 :|"^B" z | Bcd e3 | ABc d3 | Bcd e3 | ABc def | 
 g2 d BGB | c2 A F2 D | BAG E2 D | DEF G2 ||  