Craft a musical composition that adheres to the specified musical theme and letter-based structure.
X:1
L:1/8
Q:1/8=120
M:6/8
K:G
['d>ed de=f ^fee', 'G2 B/c/ ded efg fed edc dcB']  
X:1
L:1/8
Q:1/8=120
M:6/8
K:G
"^moderate" B/c/ | d>ed de=f | ^fee ege/e/ | dBG GEF | AGE EDB/c/ | d>ed de=f | 
 ^fee e!fermata!ge/e/ | dBG GEF | G>AG G2 || B/c/ | ded efg | fed edc | dcB cBA | BAG FED | 
 BAG cBA | dcB ege | dBG GEF | G3- G3 |]  