Compose a piece of music following the specified structure and theme.
X:1
L:1/8
M:2/2
K:G
['cBAG ABAG', 'E2 ef g2 ga gfef g2 d2'  
X:1
L:1/8
M:2/2
K:G
 EF | G2 Gc BdBG | BdBG cBAG | ABAG ABcd | e2 A2 A2 AB | cBcd efge | dedB cBAG | ABAG AcBA | 
 G2 E2 E2 :: ef | g2 ga gfef | g2 d2 d2 eg | a2 ab aggb | a2 e2 e2 ef | gabg fgaf | dedB cBAG | 
 ABAG AcBA | G2 E2 E2 :|  