Develop a musical composition by integrating the alphabetically represented musical pattern and the supplied melodic theme.
X:1
L:1/8
M:4/4
K:Ador
['EGDG EA,', 'BGDB, G,2 B,D G3 A BddB GDB,G,']  
X:1
L:1/8
M:4/4
K:Ador
|: EGDG EA, A,/A,/A, | EA,GA, EA,B,D | EGDG EA, A,2 | B,CB,A, G,A,B,D | EGDG EA, A,/A,/A, | 
 EA,GA, EA,B,A, | G,A,B,D GABA |1 GEDG EGDG :|2 GEDG .E2 DB, |: A,2 CE A3 B | cBAc BGDB, | 
 G,2 B,D G3 A | BddB GDB,G, | A,2 CE A3 B | cBAc BGEF | GABA G3 D |1 EGDG GEDB, :|2 EGDG EGDB, ||  