Create a musical composition employing the given alphabetic structure and melodic theme.
X:1
L:1/16
M:2/4
K:G
['g2d2d2d2 B2>c2d2d2 g2bg d2c2 B2>c2d2d2 c2ce B2Bd', 'G,4 g2>a2b2b2 e2>f2g2g2 gfba gfed ^cdec A4']  
X:1
L:1/16
M:2/4
K:G
 g2d2d2d2 | B2>c2d2d2 | g2bg d2c2 | B2>c2d2d2 | c2ce B2Bd | A2AB{c} B2AG | F2G2{B} A2GF | G4 G,4 :| 
 g2>a2b2b2 | e2>f2g2g2 | gfba gfed | ^cdec A4 | gfga2 babg | fefg agaf | fege d2^c2 | d2>e2 dcBA | 
 g2d2d2d2 | B2>c2d2d2 | g2bg d2c2 | B2>c2d2d2 | c2ce B2Bd | A2Ac{c} B2AG | F2G2{B} AGF | G4 G4 ||  