Craft a composition that integrates the assigned alphabet-related musical pattern and the provided melodic theme.
X:1
L:1/8
M:3/4
K:G
['(A2 G2) .G2']  
X:1
L:1/8
M:3/4
K:G
 gf | e2 d2 BA | (B2 G2) (GB) | (A2 G2) .G2 | G4 (GA) | B2 d2 (3(efg) | f2{e} d2 (BA) | 
 (B2 d2) (e>d) | d4 (3(GBd) | g2 (gf)(ed) | (=f2 e2) (3(dBA) | G2 (GA) (Bc/d/) | 
 !fermata!=f4 (g^f) | e2 d2 (BA) | B2 (GF) (3(GAB) | (A2 G2) .G2 | G4 ||  