Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/16
M:2/4
K:G
['g2 d2 ed', 'fgaf gfed']  
X:1
L:1/16
M:2/4
K:G
 D2 | G2ge dged | (gd)(eg) dB AG | z2 g2 d2 ed | cBAc BG EF | G2 g2 d2 ed | Bdge dB AF | 
 z2 ge dg ed | BG AF G2 :: B2 | e4 z2 g2 | fgaf gfed | BB-B2 a2g2 | gfef agfg | ee-e2 e2g2 | 
 fgaf gfed | .B2.B2 .a2.g2 | fd ef g2 :|  