Craft a piece of music that integrates both the suggested theme and letter-based structure.
X:1
L:1/8
Q:1/2=80
M:4/4
K:Gmin
['A2 B2 AB G2 dc B2 G2']  
X:1
L:1/8
Q:1/2=80
M:4/4
K:Gmin
 A2 | B2 AB G2 dc | B2 G2 G2 d2 | e2 de c2 f2 | d2 cd B2 d2 | c2 B2 A2 G2 | ^FGAF D2 dc | 
 BABG D2 ^F2 | G6 |:  