Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
Q:1/4=120
M:2/4
K:G
['BGGG G2 B', 'c2 (3Bcd dd e3 line edcB AB']  
X:1
L:1/8
Q:1/4=120
M:2/4
K:G
 d/c/ | BGGG | G2 B | AGFG | ABcd | BGGG | G2 B | cBAB | (AB) c2 :: (3Bcd dd | 
 e3 e"^bar line added" | edcB | AB c2 | (3Acc cc | c2 c2 | dcBA | Bc d2 | GGGG | FFFF | EEEE | 
 D2 D2 | cdec | BcdB | AGAB | G2 G2 :|  