Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:6/8
K:A
['(a/f/) ecA', 'cAc ece fdf e2 (a/f/) ecA']  
X:1
L:1/8
M:6/8
K:A
 (a/f/) | ecA A2 c | BGE E2 (a/f/) | ecA Ace | fba g2 (g/f/) | ecA ABc | BGE E2 E | FGA BGE | 
 A3 A2 :| e | cAc ece | fdf e2 (a/f/) | ecA ABc | BGE E2 (e/d/) | cAc ece | fdf e2 (a/f/) | 
 ecA EFG | A3 A2 :|  