Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:4/4
K:G
['', 'A2 GA B2', 'edcB c E3 FDGA BD (3(GAB) c2']  
X:1
L:1/8
M:4/4
K:G
 BA |: G3 A Bgfg | edcB A2 GA | B2 D2 EDEG | BAAG A2 BA | G(gg)f edcB | (3(cde) dB A2 GA | 
 B2 AG ED (3(DEG) |1 A4 BAGF :|2 A4 BA (3(GAB) || c2 de d G2 G | g2 fg edcB | c E3 FDGA | 
 BD (3(GAB) c2 Bc | dg (3(bag) (3a(ff) (ga) | gce(d d)gGg | fgdg ed (3(BAG) |1 A4 BA (3(GAB) :|2 
 A4 BAGF ||  