Compose melodious music utilizing the prescribed letter representation and integrating the given thematic element.
X:1
L:1/4
Q:1/8=80
M:3/4
K:G
['G/A/ B', 'g f']  
X:1
L:1/4
Q:1/8=80
M:3/4
K:G
"^slow" G/A/ | B e d | e G A | E D G/A/ | B e d/B/ |"^5" A G A | B2 G/A/ | B e d | e G A | 
"^9" E D G/A/ | B e d/B/ | A G G | G2 || G/A/ |"^13" B d e/f/ | g f e | f d e/f/ | g f e/d/ | 
"^17" B e f | e2 (3d/e/f/ | g f e/d/ | B d G/F/ |"^21" E D G/A/ | B !fermata!e d/B/ | A G G | 
 !fermata!G3 |]  