Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/8
M:2/2
K:G
['g2 dB G2 BG', 'G g efge fgab gfge fddf efge']  
X:1
L:1/8
M:2/2
K:G
 g2 dB G2 BG | E2 AE FDDF | g2 dB G2 BG | EAFD G2 G :| g | efge fgab | gfge fddf | efge fgag | 
 fefd g2 Bd | efge dBgB | ceBd AFED | GABG EGce | dBcA G2 G2 ||  