Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/8
M:3/4
K:G
['de/f/ gf ge', 'G4 GB BA/B/ AG Dc cB/c/ BA']  
X:1
L:1/8
M:3/4
K:G
 de/f/ gf ge | f/g/a/f/ d2 c2 | BA/B/ cB AG | A/B/A/G/ F/G/F/E/ D2 | de/f/ gf ge | fa/f/ d2 c2 | 
 Bc/d/ cB AG | A/c/B/A/{A} G4 :: GB BA/B/ AG | Dc cB/c/ BA | Bd dc/d/ cB | ce ed/e/ d^c | 
 de/f/ gf ge | f/g/a/f/ d2 c2 | Bc/d/ cB AG | D/c/B/A/{A} G4 :|  