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
['(DE) E4 z4 EF']  
X:1
L:1/8
M:3/4
K:G
 (EF) | (GB) B3 A | (AB) A2 (AB) | (DE) E4 | z4 EF |[M:4/4] (GB) B2- B | A(Gd) | 
[M:3/4] (d3 c)(AB) | B6 | z4 BA | (Be) e3 e | d2 B2 | (Bd) | (DE) E4 | z4 EF | 
[M:4/4] (GB) B2- (BA)(FA) |[M:3/4] A2 G2 (FE) | E6 | z4 ||  