Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:4/4
K:C
['[M:6/8][K:G] .abc[Q:3/8=128] d/c/ BAG GFG D2 E{G}', 'D (GFG) BAG GFG AFD (GFG) BGB', 'c ded d2 c |{c} BAG FGA']  
X:1
L:1/8
M:4/4
K:C
[M:6/8][K:G] .abc[Q:3/8=128] d/c/ | BAG GFG | D2 E{G} FEF | GAG GAB |{d} cAG FGA | BcB{c} BAG | 
 ABA ABc | dcA{B} AGF | G3 G2 :| D | (GFG) BAG | GFG AFD | (GFG) BGB |{d} c2 A F2 A | (GFG)BAG | 
 FGA ABc | dcA{B} AGF | G3 G2 :| D | G2 A B2 c | ded d2 c |{c} BAG FGA | cAG F2 A | BcB{c} BAG | 
 ABA ABc | dcA{B} AGF | G3 G2 :|  